A with diaeresis (Ӓ ӓ; italics: Ӓ ӓ) is a letter of the Cyrillic script. In all its forms it looks exactly like the Latin letter A with diaeresis (Ä ä Ä ä).
It is used in the Khanty, Kildin Sami, and Hill Mari languages. Also, this letter was once used in the Gagauz language (which was substituted with ⟨аь⟩).
It was used in the Bashkir language at the end of the 19th century. It corresponds to the Cyrillic letter schwa ⟨ә⟩ in modern Bashkir.
This letter also appears in Serbian in some of its dialects.