Miles Grant "Alex" Main (May 13, 1884 – December 29, 1965) was a professional baseball pitcher who played from 1914 to 1915 and in 1918 for the Detroit Tigers, Kansas City Packers and Philadelphia Phillies.

A 30-year-old rookie, Main began his big league career on April 18, 1914, for the Tigers.

The following season, he became the second Tiger pitcher to jump to the short-lived Federal League, the first being Ed Willett.

On August 16 of that season, he threw the first no-hitter in Federal League Park history.

Following his death, he was buried at Crestwood Memorial Cemetery in Grand Blanc, Michigan.