diff --git a/release_notes.md b/release_notes.md
index 6ed81e480..3f1f35993 100644
--- a/release_notes.md
+++ b/release_notes.md
@@ -1,6 +1,7 @@
 ###In Development
   - [#257](https://github.com/Mehdik/Humanizer/pull/257): Added German localisation for ToOrdinalWords and Ordinalize
   - [#261](https://github.com/Mehdik/Humanizer/pull/261): Added future dates to Portuguese - Brazil
+  - [#269](https://github.com/MehdiK/Humanizer/pull/269): Added Vietnamese localisation
 
 [Commits](https://github.com/MehdiK/Humanizer/compare/v1.25.4...master)
 
diff --git a/src/Humanizer.Tests/Humanizer.Tests.csproj b/src/Humanizer.Tests/Humanizer.Tests.csproj
index 1af33bcef..326f9e612 100644
--- a/src/Humanizer.Tests/Humanizer.Tests.csproj
+++ b/src/Humanizer.Tests/Humanizer.Tests.csproj
@@ -127,6 +127,8 @@
     <Compile Include="DateTimeHumanizePrecisionStrategyTests.cs" />
     <Compile Include="Localisation\tr\DateHumanizeTests.cs" />
     <Compile Include="Localisation\tr\TimeSpanHumanizeTests.cs" />
+    <Compile Include="Localisation\vi\DateHumanizeTests.cs" />
+    <Compile Include="Localisation\vi\TimeSpanHumanizeTests.cs" />
     <Compile Include="ResourceKeyTests.cs" />
     <Compile Include="RomanNumeralTests.cs" />
     <Compile Include="StringExtensionsTests.cs" />
@@ -171,6 +173,7 @@
   <ItemGroup>
     <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
   </ItemGroup>
+  <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
diff --git a/src/Humanizer.Tests/Localisation/vi/DateHumanizeTests.cs b/src/Humanizer.Tests/Localisation/vi/DateHumanizeTests.cs
new file mode 100644
index 000000000..fa0fcd967
--- /dev/null
+++ b/src/Humanizer.Tests/Localisation/vi/DateHumanizeTests.cs
@@ -0,0 +1,107 @@
+using Humanizer.Localisation;
+using Xunit.Extensions;
+
+namespace Humanizer.Tests.Localisation.vi
+{
+    public class DateHumanizeTests : AmbientCulture
+    {
+        public DateHumanizeTests() : base("vi") { }
+
+        [Theory]
+        [InlineData(1, "cách đây một giây")]
+        [InlineData(10, "cách đây 10 giây")]
+        public void SecondsAgo(int seconds, string expected)
+        {
+            DateHumanize.Verify(expected, seconds, TimeUnit.Second, Tense.Past);
+        }
+
+        [Theory]
+        [InlineData(1, "một giây nữa")]
+        [InlineData(10, "10 giây nữa")]
+        public void SecondsFromNow(int seconds, string expected)
+        {
+            DateHumanize.Verify(expected, seconds, TimeUnit.Second, Tense.Future);
+        }
+
+        [Theory]
+        [InlineData(1, "cách đây một phút")]
+        [InlineData(10, "cách đây 10 phút")]
+        public void MinutesAgo(int minutes, string expected)
+        {
+            DateHumanize.Verify(expected, minutes, TimeUnit.Minute, Tense.Past);
+        }
+
+        [Theory]
+        [InlineData(1, "một phút nữa")]
+        [InlineData(10, "10 phút nữa")]
+        public void MinutesFromNow(int minutes, string expected)
+        {
+            DateHumanize.Verify(expected, minutes, TimeUnit.Minute, Tense.Future);
+        }
+
+        [Theory]
+        [InlineData(1, "cách đây một tiếng")]
+        [InlineData(10, "cách đây 10 tiếng")]
+        public void HoursAgo(int hours, string expected)
+        {
+            DateHumanize.Verify(expected, hours, TimeUnit.Hour, Tense.Past);
+        }
+
+        [Theory]
+        [InlineData(1, "một tiếng nữa")]
+        [InlineData(10, "10 tiếng nữa")]
+        public void HoursFromNow(int hours, string expected)
+        {
+            DateHumanize.Verify(expected, hours, TimeUnit.Hour, Tense.Future);
+        }
+
+        [Theory]
+        [InlineData(1, "hôm qua")]
+        [InlineData(10, "cách đây 10 ngày")]
+        public void DaysAgo(int days, string expected)
+        {
+            DateHumanize.Verify(expected, days, TimeUnit.Day, Tense.Past);
+        }
+
+        [Theory]
+        [InlineData(1, "ngày mai")]
+        [InlineData(10, "10 ngày nữa")]
+        public void DaysFromNow(int days, string expected)
+        {
+            DateHumanize.Verify(expected, days, TimeUnit.Day, Tense.Future);
+        }
+
+        [Theory]
+        [InlineData(1, "cách đây một tháng")]
+        [InlineData(10, "cách đây 10 tháng")]
+        public void MonthsAgo(int months, string expected)
+        {
+            DateHumanize.Verify(expected, months, TimeUnit.Month, Tense.Past);
+        }
+
+        [Theory]
+        [InlineData(1, "một tháng nữa")]
+        [InlineData(10, "10 tháng nữa")]
+        public void MonthsFromNow(int months, string expected)
+        {
+            DateHumanize.Verify(expected, months, TimeUnit.Month, Tense.Future);
+        }
+
+        [Theory]
+        [InlineData(1, "cách đây một năm")]
+        [InlineData(2, "cách đây 2 năm")]
+        public void YearsAgo(int years, string expected)
+        {
+            DateHumanize.Verify(expected, years, TimeUnit.Year, Tense.Past);
+        }
+
+        [Theory]
+        [InlineData(1, "một năm nữa")]
+        [InlineData(2, "2 năm nữa")]
+        public void YearsFromNow(int years, string expected)
+        {
+            DateHumanize.Verify(expected, years, TimeUnit.Year, Tense.Future);
+        }
+
+    }
+}
diff --git a/src/Humanizer.Tests/Localisation/vi/TimeSpanHumanizeTests.cs b/src/Humanizer.Tests/Localisation/vi/TimeSpanHumanizeTests.cs
new file mode 100644
index 000000000..6252bfc46
--- /dev/null
+++ b/src/Humanizer.Tests/Localisation/vi/TimeSpanHumanizeTests.cs
@@ -0,0 +1,114 @@
+using System;
+using Xunit;
+using Xunit.Extensions;
+
+namespace Humanizer.Tests.Localisation.vi
+{
+    public class TimeSpanHumanizeTests : AmbientCulture
+    {
+        public TimeSpanHumanizeTests() : base("vi") { }
+
+        [Theory]
+        [InlineData(14, "2 tuần")]
+        [InlineData(7, "1 tuần")]
+        public void Weeks(int days, string expected)
+        {
+            var actual = TimeSpan.FromDays(days).Humanize();
+            Assert.Equal(expected, actual);
+        }
+
+        [Theory]
+        [InlineData(6, "6 ngày")]
+        [InlineData(2, "2 ngày")]
+        [InlineData(1, "1 ngày")]
+        public void Days(int days, string expected)
+        {
+            var actual = TimeSpan.FromDays(days).Humanize();
+            Assert.Equal(expected, actual);
+        }
+
+        [Theory]
+        [InlineData(2, "2 giờ")]
+        [InlineData(1, "1 giờ")]
+        public void Hours(int hours, string expected)
+        {
+            var actual = TimeSpan.FromHours(hours).Humanize();
+            Assert.Equal(expected, actual);
+        }
+
+        [Theory]
+        [InlineData(2, "2 phút")]
+        [InlineData(1, "1 phút")]
+        public void Minutes(int minutes, string expected)
+        {
+            var actual = TimeSpan.FromMinutes(minutes).Humanize();
+            Assert.Equal(expected, actual);
+        }
+
+        [Theory]
+        [InlineData(135, "2 phút")]
+        [InlineData(60, "1 phút")]
+        [InlineData(2, "2 giây")]
+        [InlineData(1, "1 giây")]
+        public void Seconds(int seconds, string expected)
+        {
+            var actual = TimeSpan.FromSeconds(seconds).Humanize();
+            Assert.Equal(expected, actual);
+        }
+
+        [Theory]
+        [InlineData(2500, "2 giây")]
+        [InlineData(1400, "1 giây")]
+        [InlineData(2, "2 phần ngàn giây")]
+        [InlineData(1, "1 phần ngàn giây")]
+        public void Milliseconds(int ms, string expected)
+        {
+            var actual = TimeSpan.FromMilliseconds(ms).Humanize();
+            Assert.Equal(expected, actual);
+        }
+
+        [Theory]
+        [InlineData(0, 3, "không giờ")]
+        [InlineData(0, 2, "không giờ")]
+        [InlineData(10, 2, "10 phần ngàn giây")]
+        [InlineData(1400, 2, "1 giây, 400 phần ngàn giây")]
+        [InlineData(2500, 2, "2 giây, 500 phần ngàn giây")]
+        [InlineData(120000, 2, "2 phút")]
+        [InlineData(62000, 2, "1 phút, 2 giây")]
+        [InlineData(62020, 2, "1 phút, 2 giây")]
+        [InlineData(62020, 3, "1 phút, 2 giây, 20 phần ngàn giây")]
+        [InlineData(3600020, 4, "1 giờ, 20 phần ngàn giây")]
+        [InlineData(3600020, 3, "1 giờ, 20 phần ngàn giây")]
+        [InlineData(3600020, 2, "1 giờ, 20 phần ngàn giây")]
+        [InlineData(3600020, 1, "1 giờ")]
+        [InlineData(3603001, 2, "1 giờ, 3 giây")]
+        [InlineData(3603001, 3, "1 giờ, 3 giây, 1 phần ngàn giây")]
+        [InlineData(86400000, 3, "1 ngày")]
+        [InlineData(86400000, 2, "1 ngày")]
+        [InlineData(86400000, 1, "1 ngày")]
+        [InlineData(86401000, 1, "1 ngày")]
+        [InlineData(86401000, 2, "1 ngày, 1 giây")]
+        [InlineData(86401200, 2, "1 ngày, 1 giây")]
+        [InlineData(86401200, 3, "1 ngày, 1 giây, 200 phần ngàn giây")]
+        [InlineData(1296000000, 1, "2 tuần")]
+        [InlineData(1296000000, 2, "2 tuần, 1 ngày")]
+        [InlineData(1299600000, 2, "2 tuần, 1 ngày")]
+        [InlineData(1299600000, 3, "2 tuần, 1 ngày, 1 giờ")]
+        [InlineData(1299630020, 3, "2 tuần, 1 ngày, 1 giờ")]
+        [InlineData(1299630020, 4, "2 tuần, 1 ngày, 1 giờ, 30 giây")]
+        [InlineData(1299630020, 5, "2 tuần, 1 ngày, 1 giờ, 30 giây, 20 phần ngàn giây")]
+        public void TimeSpanWithPrecesion(int milliseconds, int precesion, string expected)
+        {
+            var actual = TimeSpan.FromMilliseconds(milliseconds).Humanize(precesion);
+            Assert.Equal(expected, actual);
+        }
+
+        [Fact]
+        public void NoTime()
+        {
+            var noTime = TimeSpan.Zero;
+            var actual = noTime.Humanize();
+            Assert.Equal("không giờ", actual);
+        }
+    }
+}
diff --git a/src/Humanizer/Humanizer.csproj b/src/Humanizer/Humanizer.csproj
index bfb39f502..9f07a6c02 100644
--- a/src/Humanizer/Humanizer.csproj
+++ b/src/Humanizer/Humanizer.csproj
@@ -191,6 +191,7 @@
     <EmbeddedResource Include="Properties\Resources.sr-Latn.resx" />
     <EmbeddedResource Include="Properties\Resources.sr.resx" />
     <EmbeddedResource Include="Properties\Resources.sv.resx" />
+    <EmbeddedResource Include="Properties\Resources.vi.resx" />
   </ItemGroup>
   <ItemGroup>
     <Service Include="{508349B6-6B84-4DF5-91F0-309BEEBAD82D}" />
@@ -204,4 +205,4 @@
   <Target Name="AfterBuild">
   </Target>
   -->
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/Humanizer/Properties/Resources.vi.resx b/src/Humanizer/Properties/Resources.vi.resx
new file mode 100644
index 000000000..e2e015a60
--- /dev/null
+++ b/src/Humanizer/Properties/Resources.vi.resx
@@ -0,0 +1,234 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <data name="DateHumanize_SingleSecondAgo" xml:space="preserve">
+    <value>cách đây một giây</value>
+  </data>
+  <data name="DateHumanize_MultipleSecondsAgo" xml:space="preserve">
+    <value>cách đây {0} giây</value>
+  </data>
+  <data name="DateHumanize_SingleMinuteAgo" xml:space="preserve">
+    <value>cách đây một phút</value>
+  </data>
+  <data name="DateHumanize_MultipleMinutesAgo" xml:space="preserve">
+    <value>cách đây {0} phút</value>
+  </data>
+  <data name="DateHumanize_SingleHourAgo" xml:space="preserve">
+    <value>cách đây một tiếng</value>
+  </data>
+  <data name="DateHumanize_MultipleHoursAgo" xml:space="preserve">
+    <value>cách đây {0} tiếng</value>
+  </data>
+  <data name="DateHumanize_SingleDayAgo" xml:space="preserve">
+    <value>hôm qua</value>
+  </data>
+  <data name="DateHumanize_MultipleDaysAgo" xml:space="preserve">
+    <value>cách đây {0} ngày</value>
+  </data>
+  <data name="DateHumanize_SingleMonthAgo" xml:space="preserve">
+    <value>cách đây một tháng</value>
+  </data>
+  <data name="DateHumanize_MultipleMonthsAgo" xml:space="preserve">
+    <value>cách đây {0} tháng</value>
+  </data>
+  <data name="DateHumanize_SingleYearAgo" xml:space="preserve">
+    <value>cách đây một năm</value>
+  </data>
+  <data name="DateHumanize_MultipleYearsAgo" xml:space="preserve">
+    <value>cách đây {0} năm</value>
+  </data>
+  <data name="TimeSpanHumanize_MultipleDays" xml:space="preserve">
+    <value>{0} ngày</value>
+  </data>
+  <data name="TimeSpanHumanize_MultipleHours" xml:space="preserve">
+    <value>{0} giờ</value>
+  </data>
+  <data name="TimeSpanHumanize_MultipleMilliseconds" xml:space="preserve">
+    <value>{0} phần ngàn giây</value>
+  </data>
+  <data name="TimeSpanHumanize_MultipleMinutes" xml:space="preserve">
+    <value>{0} phút</value>
+  </data>
+  <data name="TimeSpanHumanize_MultipleSeconds" xml:space="preserve">
+    <value>{0} giây</value>
+  </data>
+  <data name="TimeSpanHumanize_SingleDay" xml:space="preserve">
+    <value>1 ngày</value>
+  </data>
+  <data name="TimeSpanHumanize_SingleHour" xml:space="preserve">
+    <value>1 giờ</value>
+  </data>
+  <data name="TimeSpanHumanize_SingleMillisecond" xml:space="preserve">
+    <value>1 phần ngàn giây</value>
+  </data>
+  <data name="TimeSpanHumanize_SingleMinute" xml:space="preserve">
+    <value>1 phút</value>
+  </data>
+  <data name="TimeSpanHumanize_SingleSecond" xml:space="preserve">
+    <value>1 giây</value>
+  </data>
+  <data name="TimeSpanHumanize_Zero" xml:space="preserve">
+    <value>không giờ</value>
+  </data>
+  <data name="TimeSpanHumanize_MultipleWeeks" xml:space="preserve">
+    <value>{0} tuần</value>
+  </data>
+  <data name="TimeSpanHumanize_SingleWeek" xml:space="preserve">
+    <value>1 tuần</value>
+  </data>
+  <data name="DateHumanize_MultipleDaysFromNow" xml:space="preserve">
+    <value>{0} ngày nữa</value>
+  </data>
+  <data name="DateHumanize_MultipleHoursFromNow" xml:space="preserve">
+    <value>{0} tiếng nữa</value>
+  </data>
+  <data name="DateHumanize_MultipleMinutesFromNow" xml:space="preserve">
+    <value>{0} phút nữa</value>
+  </data>
+  <data name="DateHumanize_MultipleMonthsFromNow" xml:space="preserve">
+    <value>{0} tháng nữa</value>
+  </data>
+  <data name="DateHumanize_MultipleSecondsFromNow" xml:space="preserve">
+    <value>{0} giây nữa</value>
+  </data>
+  <data name="DateHumanize_MultipleYearsFromNow" xml:space="preserve">
+    <value>{0} năm nữa</value>
+  </data>
+  <data name="DateHumanize_Now" xml:space="preserve">
+    <value>bây giờ</value>
+  </data>
+  <data name="DateHumanize_SingleDayFromNow" xml:space="preserve">
+    <value>ngày mai</value>
+  </data>
+  <data name="DateHumanize_SingleHourFromNow" xml:space="preserve">
+    <value>một tiếng nữa</value>
+  </data>
+  <data name="DateHumanize_SingleMinuteFromNow" xml:space="preserve">
+    <value>một phút nữa</value>
+  </data>
+  <data name="DateHumanize_SingleMonthFromNow" xml:space="preserve">
+    <value>một tháng nữa</value>
+  </data>
+  <data name="DateHumanize_SingleSecondFromNow" xml:space="preserve">
+    <value>một giây nữa</value>
+  </data>
+  <data name="DateHumanize_SingleYearFromNow" xml:space="preserve">
+    <value>một năm nữa</value>
+  </data>
+</root>
\ No newline at end of file