Michael James Mahler (born July 30, 1952) is a retired Major League Baseball pitcher.

He played during eight seasons at the major league level for the Atlanta Braves, Pittsburgh Pirates, California Angels, Montreal Expos, Detroit Tigers, Texas Rangers, and Toronto Blue Jays.

Mahler played his first professional season with their Double-A Savannah Braves in 1974, and his last with the St. Louis Cardinals' Triple-A Louisville Redbirds in 1987.

Though hardly a distinguished major leaguer, he was involved in a number of historic moments during his short career.

I owe a lot of appreciation to the people in the Montreal organization who gave me the opportunity to pitch in the majors again.

On June 1, 1977, Mahler threw a no-hitter for the Richmond Braves AAA team against the Toledo Mud Hens.

On September 18, 1985, Mahler pitched 7+2⁄3 innings of one-hit relief to lead the Detroit Tigers to a 5–2 victory over the New York Yankees, thus denying a bid by Phil Niekro to win his 300th game.

In that same game, New York Yankees manager Billy Martin sent left-handed-hitter Mike Pagliarulo up to bat right-handed against Mahler.

I've played with Reggie Jackson and Rod Carew and Dale Murphy, I've learned from Tom House and (Johnny) Sain, the two best pitching coaches in the business.