Mark Christopher Carlson (born July 11, 1969) is an American umpire in Major League Baseball.

[1] Carlson had previously worked in the Pioneer, Midwest, Florida State, Southern, International, and Arizona Fall leagues before reaching MLB.

[3] He was the second base umpire on September 28, 2012, when Homer Bailey of the Cincinnati Reds no-hit the Pittsburgh Pirates.

Carlson attended Joliet West High School and Parkland College, where he played catcher.

He also served in the United States Marine Corps and served as a board member for UMPS Care Charities before founding the Mark Carlson's Care children's charity.