diff --git a/SuccessfulCodeTools/Extensions/ReadOnlyDictionaryExtensions.cs b/SuccessfulCodeTools/Extensions/ReadOnlyDictionaryExtensions.cs
new file mode 100644
index 0000000..0ec54dc
--- /dev/null
+++ b/SuccessfulCodeTools/Extensions/ReadOnlyDictionaryExtensions.cs
@@ -0,0 +1,15 @@
+using System.Collections.Generic;
+
+namespace SuccessfulCodeTools.Extensions
+{
+    public static class ReadOnlyDictionaryExtensions
+    {
+        public static TValue GetValueOrDefault<TKey, TValue>(this IReadOnlyDictionary<TKey, TValue> dictionary, TKey key)
+        {
+            if(dictionary.TryGetValue(key, out TValue value))
+                return value;
+
+            return default;
+        }
+    }
+}