diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6e889bccc13..c08ec7f13a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Added example for running Django with auto instrumentation.
   ([#1803](https://github.com/open-telemetry/opentelemetry-python/pull/1803))
+- Allow span limits (OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT, OTEL_SPAN_EVENT_COUNT_LIMIT, OTEL_SPAN_LINK_COUNT_LIMIT)
+  to be set to "none".
+  ([#1830](https://github.com/open-telemetry/opentelemetry-python/pull/1830))
 
 ### Changed
 - Fixed OTLP gRPC exporter silently failing if scheme is not specified in endpoint.
diff --git a/opentelemetry-sdk/src/opentelemetry/sdk/trace/__init__.py b/opentelemetry-sdk/src/opentelemetry/sdk/trace/__init__.py
index 625b8519ef5..67b4396a2f7 100644
--- a/opentelemetry-sdk/src/opentelemetry/sdk/trace/__init__.py
+++ b/opentelemetry-sdk/src/opentelemetry/sdk/trace/__init__.py
@@ -58,12 +58,22 @@
 
 logger = logging.getLogger(__name__)
 
-SPAN_ATTRIBUTE_COUNT_LIMIT = int(
-    environ.get(OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT, 128)
+
+def _get_limit_from_env(limit_name, default) -> Optional[int]:
+    value = environ.get(limit_name, default).strip().lower()
+    if value == "none":
+        return None
+    return int(value)
+
+
+SPAN_ATTRIBUTE_COUNT_LIMIT = _get_limit_from_env(
+    OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT, "128"
 )
 
-_SPAN_EVENT_COUNT_LIMIT = int(environ.get(OTEL_SPAN_EVENT_COUNT_LIMIT, 128))
-_SPAN_LINK_COUNT_LIMIT = int(environ.get(OTEL_SPAN_LINK_COUNT_LIMIT, 128))
+_SPAN_EVENT_COUNT_LIMIT = _get_limit_from_env(
+    OTEL_SPAN_EVENT_COUNT_LIMIT, "128"
+)
+_SPAN_LINK_COUNT_LIMIT = _get_limit_from_env(OTEL_SPAN_LINK_COUNT_LIMIT, "128")
 _VALID_ATTR_VALUE_TYPES = (bool, str, int, float)
 # pylint: disable=protected-access
 _TRACE_SAMPLER = sampling._get_from_env_or_default()
diff --git a/opentelemetry-sdk/src/opentelemetry/sdk/util/__init__.py b/opentelemetry-sdk/src/opentelemetry/sdk/util/__init__.py
index 1bb8ed264fc..694a0a5b1bd 100644
--- a/opentelemetry-sdk/src/opentelemetry/sdk/util/__init__.py
+++ b/opentelemetry-sdk/src/opentelemetry/sdk/util/__init__.py
@@ -97,10 +97,11 @@ class BoundedDict(MutableMapping):
     """
 
     def __init__(self, maxlen):
-        if not isinstance(maxlen, int):
-            raise ValueError
-        if maxlen < 0:
-            raise ValueError
+        if maxlen is not None:
+            if not isinstance(maxlen, int):
+                raise ValueError
+            if maxlen < 0:
+                raise ValueError
         self.maxlen = maxlen
         self.dropped = 0
         self._dict = OrderedDict()  # type: OrderedDict
diff --git a/opentelemetry-sdk/tests/test_util.py b/opentelemetry-sdk/tests/test_util.py
index cacc77dbd98..5c13bf2c7ed 100644
--- a/opentelemetry-sdk/tests/test_util.py
+++ b/opentelemetry-sdk/tests/test_util.py
@@ -134,6 +134,14 @@ def test_extend_drop(self):
         self.assertEqual(len(blist), list_len)
         self.assertEqual(blist.dropped, len(other_list))
 
+    def test_no_limit(self):
+        blist = BoundedList(maxlen=None)
+        for num in range(100):
+            blist.append(num)
+
+        for num in range(100):
+            self.assertEqual(blist[num], num)
+
 
 class TestBoundedDict(unittest.TestCase):
     base = collections.OrderedDict(
@@ -211,3 +219,11 @@ def test_bounded_dict(self):
 
         with self.assertRaises(KeyError):
             _ = bdict["new-name"]
+
+    def test_no_limit(self):
+        bdict = BoundedDict(maxlen=None)
+        for num in range(100):
+            bdict[num] = num
+
+        for num in range(100):
+            self.assertEqual(bdict[num], num)