The 1921 All-Ireland Senior Football Championship final was the 34th All-Ireland Final and the deciding match of the 1921 All-Ireland Senior Football Championship, an inter-county Gaelic football tournament for the top teams in Ireland.

Dublin led 0–4 to 0–1 at half-time, and a late Bill Fitzsimmons goal gave them a comprehensive victory.

[1] It was the first of three All-Ireland SFC titles won by Dublin in the 1920s, which made them joint "team of the decade" with Kerry, also winner of three.

[2] Dublin =