Frank J. Beck [born Frank J. Hengstebeck] (April 29, 1860 – February 8, 1941) was a right-handed starting pitcher and right fielder in Major League Baseball who played for the Pittsburgh Alleghenys (American Association) and Baltimore Monumentals (Union Association) during the 1884 season. According to Baseball Reference, he was born in 1858 and his death date and place are unknown; other sources say the man who died in Michigan is not the same individual as the ballplayer.