diff --git a/CHANGELOG.md b/CHANGELOG.md
index 49db9ea9d3..06bb1f9a8e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@
 
 ### Improvements
 
+- Add .awk extension to file types treaded as CotEditor script.
 - Adjust the layout of the file preview view.
 - Update the Swift syntax to add `@Test` and `@Suite` attributes.
 
diff --git a/CotEditor/Info.plist b/CotEditor/Info.plist
index 0f257818ca..3d96f635af 100644
--- a/CotEditor/Info.plist
+++ b/CotEditor/Info.plist
@@ -230,6 +230,30 @@
 				</array>
 			</dict>
 		</dict>
+		<dict>
+			<key>UTTypeConformsTo</key>
+			<array>
+				<string>public.script</string>
+			</array>
+			<key>UTTypeDescription</key>
+			<string>AWK script</string>
+			<key>UTTypeIcons</key>
+			<dict>
+				<key>UTTypeIconBackgroundName</key>
+				<string>CurlyBrackets-fill</string>
+				<key>UTTypeIconText</key>
+				<string>config</string>
+			</dict>
+			<key>UTTypeIdentifier</key>
+			<string>com.coteditor.awk</string>
+			<key>UTTypeTagSpecification</key>
+			<dict>
+				<key>public.filename-extension</key>
+				<array>
+					<string>awk</string>
+				</array>
+			</dict>
+		</dict>
 		<dict>
 			<key>UTTypeConformsTo</key>
 			<array>
diff --git a/CotEditor/Resources/CotEditor.help/Contents/Resources/en.lproj/pgs/script_unixscript.html b/CotEditor/Resources/CotEditor.help/Contents/Resources/en.lproj/pgs/script_unixscript.html
index bce49b78af..72acdc24d1 100644
--- a/CotEditor/Resources/CotEditor.help/Contents/Resources/en.lproj/pgs/script_unixscript.html
+++ b/CotEditor/Resources/CotEditor.help/Contents/Resources/en.lproj/pgs/script_unixscript.html
@@ -16,7 +16,7 @@ <h1>Script CotEditor with UNIX script</h1>
 <p>This page explains how to pass your document’s text to UNIX scripts that are executable from the Script menu, or how to receive the outputs from them.</p>
 
 <ul>
-	<li>The file extensions of the scripts you can add to the Script menu are: .sh, .pl, .php, .rb, .py, .js, and .swift (regardless of the language)</li>
+	<li>The file extensions of the scripts you can add to the Script menu are: .sh, .pl, .php, .rb, .py, .js, .awk, and .swift (regardless of the language)</li>
 	<li>To run a script, you need to set execute permission for the script file.</li>
 </ul>
 
diff --git a/CotEditor/Resources/CotEditor.help/Contents/Resources/ja.lproj/pgs/script_unixscript.html b/CotEditor/Resources/CotEditor.help/Contents/Resources/ja.lproj/pgs/script_unixscript.html
index f13f3d1380..fc35239f07 100644
--- a/CotEditor/Resources/CotEditor.help/Contents/Resources/ja.lproj/pgs/script_unixscript.html
+++ b/CotEditor/Resources/CotEditor.help/Contents/Resources/ja.lproj/pgs/script_unixscript.html
@@ -16,7 +16,7 @@ <h1>CotEditorをUNIXスクリプトで操作する</h1>
 <p>このページではスクリプトメニューから実行するUNIXスクリプトにCotEditorで編集中の書類の情報やテキストを渡したり、スクリプトの実行結果を書類に反映する方法を説明します。</p>
 
 <ul>
-	<li>スクリプトメニューに登録できるスクリプトの拡張子は.sh、.pl、.php、.rb、.py、.js、.swiftです（言語は関係ありません）。</li>
+	<li>スクリプトメニューに登録できるスクリプトの拡張子は.sh、.pl、.php、.rb、.py、.js、.awk、.swiftです（言語は関係ありません）。</li>
 	<li>スクリプトには実行権限がなければなりません。</li>
 </ul>
 
diff --git a/CotEditor/Resources/Localizables/InfoPlist.xcstrings b/CotEditor/Resources/Localizables/InfoPlist.xcstrings
index 03530b2a75..7d4cb01cd9 100644
--- a/CotEditor/Resources/Localizables/InfoPlist.xcstrings
+++ b/CotEditor/Resources/Localizables/InfoPlist.xcstrings
@@ -1,6 +1,94 @@
 {
   "sourceLanguage" : "en",
   "strings" : {
+    "AWK script" : {
+      "localizations" : {
+        "cs" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "AWK skript"
+          }
+        },
+        "de" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "AWK-Skript"
+          }
+        },
+        "en-GB" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "AWK script"
+          }
+        },
+        "es" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Script AWK"
+          }
+        },
+        "fr" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Script AWK"
+          }
+        },
+        "it" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Script AWK"
+          }
+        },
+        "ja" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "AWKスクリプト"
+          }
+        },
+        "ko" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "AWK 스크립트"
+          }
+        },
+        "nl" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "AWK-script"
+          }
+        },
+        "pl" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "skrypt AWK"
+          }
+        },
+        "pt" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Script AWK"
+          }
+        },
+        "tr" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "AWK betiği"
+          }
+        },
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "AWK脚本"
+          }
+        },
+        "zh-Hant" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "AWK腳本"
+          }
+        }
+      }
+    },
     "BibTeX bibliography" : {
       "localizations" : {
         "cs" : {
diff --git a/CotEditor/Sources/Models/Scripts/ScriptDescriptor.swift b/CotEditor/Sources/Models/Scripts/ScriptDescriptor.swift
index a9ca04f5bc..0232aabc74 100644
--- a/CotEditor/Sources/Models/Scripts/ScriptDescriptor.swift
+++ b/CotEditor/Sources/Models/Scripts/ScriptDescriptor.swift
@@ -27,6 +27,12 @@ import Foundation
 import UniformTypeIdentifiers
 import Shortcut
 
+private extension UTType {
+    
+    static let awkScript = UTType(exportedAs: "com.coteditor.awk")
+}
+
+
 enum ScriptingFileType: CaseIterable {
     
     case appleScript
@@ -37,7 +43,7 @@ enum ScriptingFileType: CaseIterable {
         
         switch self {
             case .appleScript: [.appleScript, .osaScript, .osaScriptBundle]  // .applescript, .scpt, .scptd
-            case .unixScript: [.shellScript, .perlScript, .phpScript, .rubyScript, .pythonScript, .javaScript, .swiftSource]
+            case .unixScript: [.shellScript, .perlScript, .phpScript, .rubyScript, .pythonScript, .javaScript, .awkScript, .swiftSource]
         }
     }
 }