diff --git a/rules/kix/kix-tilde.js b/rules/kix/kix-tilde.js
new file mode 100644
index 00000000..f2971e3e
--- /dev/null
+++ b/rules/kix/kix-tilde.js
@@ -0,0 +1,26 @@
+( function ( $ ) {
+	'use strict';
+
+	var kixTilde = {
+		id: 'kix-tilde',
+		name: 'Khiamniungan tilde',
+		description: 'Khiamniungan Naga input keyboard',
+		date: '2026-07-22',
+		URL: 'https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Extension:UniversalLanguageSelector/Input_methods/kix-tilde',
+		author: 'Toluwanimi Ayodele',
+		license: 'GPLv3',
+		version: '1.0',
+		maxKeyLength: 2,
+		patterns: [
+			[ '~u', 'ü' ], // U+00FC
+			[ '~U', 'Ü' ], // U+00DC
+			[ '~\\\\', '\u0300' ], // Combining grave
+			[ '~-', '\u0304' ], // Combining macron
+			[ '~\\^', '\u0302' ], // Combining circumflex
+			[ '~/', '\u0301' ] // Combining acute
+		]
+	};
+
+	$.ime.register( kixTilde );
+}( jQuery ) );
+
diff --git a/src/jquery.ime.inputmethods.js b/src/jquery.ime.inputmethods.js
index 64188cc0..e48e926b 100755
--- a/src/jquery.ime.inputmethods.js
+++ b/src/jquery.ime.inputmethods.js
@@ -540,6 +540,10 @@
 			name: 'Gĩkũyũ',
 			source: 'rules/ki/ki-tilde.js'
 		},
+		'kix-tilde': {
+			name: 'Khiamniungan tilde',
+			source: 'rules/kix/kix-tilde.js'
+		},
 		'kk-arabic': {
 			name: 'Kazakh Arabic transliteration',
 			source: 'rules/kk/kk-arabic.js'
@@ -1530,6 +1534,10 @@
 			autonym: 'Gĩkũyũ',
 			inputmethods: [ 'ki-tilde' ]
 		},
+		kix: {
+			autonym: 'Khiamniungan',
+			inputmethods: [ 'kix-tilde' ]
+		},
 		kk: {
 			autonym: 'Қазақша',
 			inputmethods: [ 'kk-kbd', 'kk-arabic' ]
diff --git a/test/jquery.ime.test.fixtures.js b/test/jquery.ime.test.fixtures.js
index 9948e2f7..0fd26301 100644
--- a/test/jquery.ime.test.fixtures.js
+++ b/test/jquery.ime.test.fixtures.js
@@ -1,4 +1,4 @@
-// Variables for Cyrillic with palochka transliteration tests.
+// Variables for Cyrillic with palochka transliteration tests.
 // All the characters are very similar in appearance,
 // so it's better to give them names to avoid confusion.
 // eslint-disable-next-line no-implicit-globals
@@ -4253,6 +4253,20 @@ var palochkaVariants = {
 			{ input: 'd~ha', output: 'ದ್ಹ', description: 'd~ha for ದ್ಹ in Kannada transliteration' }
 		]
 	},
+	{
+		description: 'Khiamniungan Naga tilde test',
+		inputmethod: 'kix-tilde',
+		tests: [
+			{ input: 'a~\\a~-a~^a~/e~\\e~-e~^e~/i~\\i~-i~^i~/', output: 'àāâáèēêéìīîí', description: 'a/e/i × 4 tones' },
+			{ input: 'o~\\o~-o~^o~/u~\\u~-u~^u~/', output: 'òōôóùūûú', description: 'o/u × 4 tones' },
+			{ input: '~u~\\~u~-~u~^~u~/', output: 'ǜǖü̂ǘ', description: 'ü × 4 tones' },
+			{ input: '~U~\\~U~-~U~^~U~/', output: 'ǛǕÜ̂Ǘ', description: 'Ü × 4 tones' },
+			{ input: '~u~- a~/ e~^ i~\\ o~-', output: 'ǖ á ê ì ō', description: 'mixed tones with spaces' },
+			{ input: '~~ ~ ~x ~', output: '~~ ~ ~x ~', description: 'double tilde, tilde space, tilde+x' },
+			{ input: 'A~\\E~-I~^O~/U~\\', output: 'ÀĒÎÓÙ', description: 'capital tone-marked vowels' },
+			{ input: 'h~u~-he~^i', output: 'hǖhêi', description: 'real word h~u~-he~^i' }
+		]
+	},
 	{
 		description: 'Korean RR test',
 		inputmethod: 'ko-rr',