diff --git a/Upsilon/StandardLibraries/ListLibrary.cs b/Upsilon/StandardLibraries/ListLibrary.cs
new file mode 100644
index 0000000..927164c
--- /dev/null
+++ b/Upsilon/StandardLibraries/ListLibrary.cs
@@ -0,0 +1,21 @@
+using Upsilon.BaseTypes;
+using Upsilon.BaseTypes.ScriptTypeInterfaces;
+
+namespace Upsilon.StandardLibraries
+{
+    internal class ListLibrary
+    {
+        [ScriptFunction("contains", "Returns a boolean that defines whether a table contains a value", directScriptManipulation: true)]
+        public ScriptBoolean Contains(IIterable table, ScriptType obj)
+        {
+            var enumerator = table.GetScriptEnumerator();
+            while (enumerator.MoveNext())
+            {
+                var current = enumerator.Current;
+                if (current == obj)
+                    return true;
+            }
+            return false;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Upsilon/StandardLibraries/StaticScope.cs b/Upsilon/StandardLibraries/StaticScope.cs
index 4784c2c..7b825aa 100644
--- a/Upsilon/StandardLibraries/StaticScope.cs
+++ b/Upsilon/StandardLibraries/StaticScope.cs
@@ -77,6 +77,11 @@ namespace Upsilon.StandardLibraries
             boundFuncs.Add("math",
                 new UserDataVariableSymbol("math", BoundTypeHandler.GetTypeDefinition(typeof(MathLibrary)), true));
 
+            UserDataTypeHandler.LoadType<ListLibrary>();
+            funcs.Add("list", new ListLibrary().ToScriptType());
+            boundFuncs.Add("list",
+                new UserDataVariableSymbol("list", BoundTypeHandler.GetTypeDefinition(typeof(ListLibrary)), true));
+
             var scope = new EvaluationScope(funcs);
             var boundScope = new BoundScope(boundFuncs, null);
             return (scope, boundScope);