Mid Ulster (Irish: Lár Uladh, Ulster Scots: Mid Ulstèr) is a constituency represented in the Northern Ireland Assembly.

It usually shares boundaries with the Mid Ulster UK Parliament constituency.

Mid Ulster is the only constituency in Northern Ireland to have returned the same number of Assembly members from the same parties at each election before that of 2017 – 3 Sinn Féin, 1 SDLP, 1 UUP and 1 DUP.

The constituency's most prominent MLA has been Michelle O'Neill, who has been the First Minister of Northern Ireland since February 2024.

O'Neill is the first nationalist and the second woman to hold the post.