diff --git a/Scripts/Attributes/OverrideTooltipAttribute.cs b/Scripts/Attributes/OverrideTooltipAttribute.cs
new file mode 100644
index 0000000..3e8e572
--- /dev/null
+++ b/Scripts/Attributes/OverrideTooltipAttribute.cs
@@ -0,0 +1,23 @@
+using System;
+
+namespace XNodeEditor {
+    
+    /// <summary>
+    /// <para>When applied to the definition of a custom class, allows for the tooltip shown beside the nodes to be overriden.</para>
+    /// Optionally, whether an output node's value is shown in the tooltip can also be turned off.
+    /// Leaving the tooltip override blank or null will leave the normal tooltip (type name) in place.
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Class)]
+    public sealed class OverrideTooltipAttribute : Attribute {
+        public readonly bool overrideTooltip;
+        public readonly string tooltip;
+        public readonly bool hideValue;
+            
+        public OverrideTooltipAttribute(string tooltip = "", bool hideValue = false) {
+            overrideTooltip = !string.IsNullOrEmpty(tooltip);
+            if (overrideTooltip) this.tooltip = tooltip;
+            this.hideValue = hideValue;
+        }
+    }
+    
+}
\ No newline at end of file
diff --git a/Scripts/Attributes/OverrideTooltipAttribute.cs.meta b/Scripts/Attributes/OverrideTooltipAttribute.cs.meta
new file mode 100644
index 0000000..36d84d2
--- /dev/null
+++ b/Scripts/Attributes/OverrideTooltipAttribute.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: b578945cab8b7c643ac937a49febb57e
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Scripts/Editor/NodeGraphEditor.cs b/Scripts/Editor/NodeGraphEditor.cs
index 3a0464c..80af4b9 100644
--- a/Scripts/Editor/NodeGraphEditor.cs
+++ b/Scripts/Editor/NodeGraphEditor.cs
@@ -123,9 +123,17 @@ namespace XNodeEditor {
         public virtual string GetPortTooltip(XNode.NodePort port) {
             Type portType = port.ValueType;
             string tooltip = "";
-            tooltip = portType.PrettyName();
-            if (port.IsOutput) {
-                object obj = port.node.GetValue(port);
+
+            // Now allow tooltips to be overridden or to have their values hidden based on attribute usage
+            var targetType = portType.HasElementType ? portType.GetElementType() : portType; // For arrays and lists.
+            // ReSharper disable once PossibleNullReferenceException
+            var attr = ((OverrideTooltipAttribute[])targetType
+                .GetCustomAttributes(typeof(OverrideTooltipAttribute), false)).SingleOrDefault();
+            tooltip = attr?.overrideTooltip ?? false ? attr.tooltip : targetType.PrettyName();
+            var hideValue = attr?.hideValue ?? false;
+            // ReSharper disable once InvertIf
+            if (!hideValue && port.IsOutput) {
+                var obj = port.node.GetValue(port);
                 tooltip += " = " + (obj != null ? obj.ToString() : "null");
             }
             return tooltip;