Alfred Henry Kellett (October 30, 1901 – July 14, 1960) was a relief pitcher in Major League Baseball who played for the Boston Red Sox (1923) and Philadelphia Athletics (1924). Listed at 6 ft 3 in (1.91 m), 200 lb., Kellett batted and threw right-handed. He was born in Red Bank, New Jersey.

In a six-game career, Kellett posted a 0–1 record with a 6.30 ERA in 10 innings of work.

Kellett died in New York City at age 58.