The Arakan Army (Kayin State) () (AA-K) is a Rakhine insurgent group based in Kayin State, Myanmar.
On 23 June 2020, Thai authorities raided a house in the border town of Mae Sot (close to Kayin State), seizing a large stash of newly manufactured weapons originating from China. Local insurgents on the Burmese side of the border told The Irrawaddy that the weapons were likely being smuggled for the Arakan Army because "they pay good prices".
On 7 May, 2021, after the 2021 Myanmar coup, AA-K leader Min Tun announced that the militia had joined anti-Tatmadaw resistance, capturing the Oo Thu Hta military base alongside the Karen National Liberation Army.
The Arakan Army's self-proclaimed objectives are as follows: