Timothy Michael Dunn (born December 13, 1966) is an American politician and a Republican member of the Arizona Senate.

He also previously represented District 13 from 2018 to 2023.

Dunn was appointed to replace expelled representative Don Shooter.

Dunn is a farmer in Yuma, Arizona where his business, Dunn Grain Co. Inc., specializes in selling grain seeds.

[1] Dunn has suggested (in Congress) a pipeline transferring water from the Mississippi River to the Colorado River.