Ka with macron (К̅ к̅) is a letter of the Cyrillic script. It was formerly used in the first alphabet for the Altai language.

Cyrillic letter
Ka with macron
The Cyrillic script
Slavic letters
АА̀А̂А̄ӐӒБВ
ГҐДЂЃЕЀЕ̂
Е̄ЁЄЄ́ЖЗЗ́Ѕ
ИІІ́ЇЍИ̂Ӣ
ЙӤЈКЛЉМН
ЊОО̀О̂О̄ӦПР
СС́ТЋЌУУ̀У̂
ӮЎӰФХЦЧЏ
ШЩЪЪ̀ЫЬѢ
ЭЮЮ̀ЯЯ̀ʼˮ
Non-Slavic letters
А̊А̃Ӓ̄ӔӘӘ́Ә̃Ӛ
В̌ԜГ̑Г̇Г̣Г̌Г̂Г̆
Г̈Г̊ҔҒӺҒ̌Ғ̊
ӶГ̡Д́Д̌Д̈Д̣Д̆Ӗ
Е̃Ё̄Є̈ԐԐ̈ҖӜӁ
Ж̣ҘӞЗ̌З̣З̆ӠИ̃
И̇ҊҚӃҠҞҜК̣
К̊Қ̊ԚЛ́ӅԮԒ
Л̈ӍН́ӉҢԨӇ
ҤО̆О̃Ӧ̄ӨӨ̄Ө́Ө̆
ӪԤП̈Р̌ҎС̌ҪС̣
С̱Т́Т̈Т̌Т̇Т̣Ҭ
У̃ӲУ̊Ӱ̄ҰҮҮ́Х̣
Х̱Х̮Х̑Х̌ҲӼХ̊Ӿ
Ӿ̊ҺҺ̈ԦЦ̌Ц̈ҴҶ
Ҷ̣ӴӋҸЧ̇Ч̣Ҽ
ҾШ̣Ы̆Ы̄ӸҌ
ҨЭ̆Э̄Э̇ӬӬ́Ӭ̄Ю̆
Ю̈Ю̄Я̆Я̄Я̈Ӏ
Archaic or unused letters
А̨Б̀Б̣Б̱В̀Г̀Г̧
Г̄Г̓Г̆Ҕ̀Ҕ̆ԀД̓
Д̀Д̨ԂЕ̇Е̨
Ж̀Ж̑Џ̆
Ꚅ̆З̀З̑ԄԆ
ԪІ̂І̣І̨
Ј̵Ј̃К̓К̀К̆Ӄ̆
К̑К̇К̈К̄ԞК̂
Л̀ԠԈЛ̑Л̇Ԕ
М̀М̃Н̀Н̄Н̧
Н̃ԊԢН̡Ѻ
П̓П̀
П́ҦП̧П̑ҀԚ̆Р́
Р̀Р̃ԖС̀С̈ԌҪ̓
Т̓Т̀ԎТ̑Т̧
Ꚍ̆ѸУ̇
У̨ꙋ́Ф̑Ф̓Х́Х̀Х̆Х̇
Х̧Х̾Х̓һ̱ѠѼ
ѾЦ̀Ц́Ц̓Ꚏ̆
Ч́Ч̀Ч̆Ч̑Ч̓
ԬꚆ̆Ҽ̆Ш̀
Ш̆Ш̑Щ̆Ꚗ̆Ъ̄Ъ̈
Ъ̈̄Ы̂Ы̃Ѣ́Ѣ̈Ѣ̆
Э̨Э̂Ю̂
Я̈Я̂Я̨ԘѤѦѪ
ѨѬѮѰѲѴ
Ѷ