Maureen O'Connor (born August 7, 1951) is an American lawyer and judge who served as the chief justice of the Ohio Supreme Court from 2011 to 2022.

O'Connor received "The Cleveland State University Distinguished Alumnae Award for Civic Achievement" in 1997.

[9] The ticket was victorious and O'Connor was elected Ohio's 61st lieutenant governor serving in that office from 1999 until she resigned at the end of 2002.

[2][8][10] In 2002, O'Connor ran for and was elected to the Ohio Supreme Court, defeating Democrat Timothy Black.

[1] In 2022, O'Connor was the deciding vote in a ruling that struck down a heavily pro-Republican gerrymandered redistricting map.