The flag of the Republic of Central Lithuania, an unrecognized short-lived puppet republic of Poland, was established on 12 October 1920 and remained in use until 18 April 1922, when the state ceased to exist.

On the right is a silver (white) eagle, and on the left, a silver (white) Pahonia, a charge, that consists of a knight with a sword in his right hand, and a shield with the Cross of Lorraine in his left hand, that is sitting on a jumping horse.

[3] The flag was established as the symbol of the state, on 12 November 1920, in the Decree No.

1 of the Chief-in-command of the Army of Central Lithuania.

[1] It stopped being used after the Republic of Central Lithuania was incorporated into Poland on 18 April 1922.