The flag of Saxony-Anhalt is a yellow and black bi-colour, with the state's coat of arms centred on the flag.

Black and yellow were the colours of the Prussian Province of Saxony and the pre-1952 State of Saxony-Anhalt, but on 29 January 1991 the traditional order of the colours was reversed to distinguish the flag from the black-over-yellow bi-colour of Baden-Württemberg. This was then enshrined in the state constitution of 17 July 1992, where Article 1 deals with the state symbols.

From 1991 to 2017, the flag had two major variants: a plain bi-colour as the civil flag and the current flag as the state flag.