diff --git a/include/ignition/gazebo/detail/EntityComponentManager.hh b/include/ignition/gazebo/detail/EntityComponentManager.hh
index ee87528162..027baf355c 100644
--- a/include/ignition/gazebo/detail/EntityComponentManager.hh
+++ b/include/ignition/gazebo/detail/EntityComponentManager.hh
@@ -63,6 +63,7 @@ namespace traits
 template<typename DataType>
 auto CompareData = [](const DataType &_a, const DataType &_b) -> bool
 {
+  // cppcheck-suppress syntaxError
   if constexpr (std::is_same<DataType, double>::value)
   {
     return math::equal(_a, _b);
diff --git a/src/gui/plugins/entity_tree/EntityTree.hh b/src/gui/plugins/entity_tree/EntityTree.hh
index 228a140a57..4f882de9f7 100644
--- a/src/gui/plugins/entity_tree/EntityTree.hh
+++ b/src/gui/plugins/entity_tree/EntityTree.hh
@@ -81,12 +81,14 @@ namespace gazebo
     struct EntityInfo
     {
       /// \brief Entity ID
+      // cppcheck-suppress unusedStructMember
       unsigned int entity;
 
       /// \brief Entity name
       QString name;
 
       /// \brief Parent ID
+      // cppcheck-suppress unusedStructMember
       unsigned int parentEntity;
 
       /// \brief Entity type
diff --git a/src/gui/plugins/resource_spawner/ResourceSpawner.hh b/src/gui/plugins/resource_spawner/ResourceSpawner.hh
index e2fa9478c8..d95e5727cb 100644
--- a/src/gui/plugins/resource_spawner/ResourceSpawner.hh
+++ b/src/gui/plugins/resource_spawner/ResourceSpawner.hh
@@ -76,6 +76,7 @@ namespace gazebo
 
     /// \brief True if the user is currently observing fuel resources and false
     /// if the user is currently observing local resources.
+    // cppcheck-suppress unusedStructMember
     bool isFuel = false;
   };
 
diff --git a/src/gui/plugins/tape_measure/TapeMeasure.cc b/src/gui/plugins/tape_measure/TapeMeasure.cc
index 2642c052f3..adbec33d47 100644
--- a/src/gui/plugins/tape_measure/TapeMeasure.cc
+++ b/src/gui/plugins/tape_measure/TapeMeasure.cc
@@ -15,9 +15,7 @@
  *
 */
 
-#include "ignition/gazebo/gui/GuiEvents.hh"
-
-#include "TapeMeasure.hh"
+#include <ignition/msgs/marker.pb.h>
 
 #include <iostream>
 #include <unordered_set>
@@ -28,12 +26,14 @@
 #include <ignition/gui/Application.hh>
 #include <ignition/gui/GuiEvents.hh>
 #include <ignition/gui/MainWindow.hh>
-#include <ignition/msgs/marker.pb.h>
 #include <ignition/msgs/Utility.hh>
 #include <ignition/plugin/Register.hh>
 #include <ignition/transport/Node.hh>
 #include <ignition/transport/Publisher.hh>
 
+#include "ignition/gazebo/gui/GuiEvents.hh"
+#include "TapeMeasure.hh"
+
 namespace ignition::gazebo
 {
   class TapeMeasurePrivate
diff --git a/src/ign.cc b/src/ign.cc
index 42e1643022..737282cb71 100644
--- a/src/ign.cc
+++ b/src/ign.cc
@@ -73,6 +73,7 @@ extern "C" IGNITION_GAZEBO_VISIBLE const char *findFuelResource(
     ignmsg << "Cached world found." << std::endl;
     worldPath = path;
   }
+  // cppcheck-suppress syntaxError
   else if (ignition::fuel_tools::Result result =
     fuelClient.DownloadWorld(ignition::common::URI(_pathToResource), path);
     result)
diff --git a/test/integration/scene_broadcaster_system.cc b/test/integration/scene_broadcaster_system.cc
index b402fe6269..8caac85336 100644
--- a/test/integration/scene_broadcaster_system.cc
+++ b/test/integration/scene_broadcaster_system.cc
@@ -82,6 +82,8 @@ TEST_P(SceneBroadcasterTest, PoseInfo)
 
   unsigned int sleep{0u};
   unsigned int maxSleep{10u};
+  // cppcheck-suppress unmatchedSuppression
+  // cppcheck-suppress knownConditionTrueFalse
   while (!received && sleep++ < maxSleep)
     IGN_SLEEP_MS(100);
 
@@ -447,6 +449,8 @@ TEST_P(SceneBroadcasterTest, State)
   node.Request("/world/default/state_async", req);
 
   sleep = 0;
+  // cppcheck-suppress unmatchedSuppression
+  // cppcheck-suppress knownConditionTrueFalse
   while (!received && sleep++ < maxSleep)
   {
     // Run server