Frank Ewen Booth (October 4, 1910 – December 1, 1980) was an American competition swimmer who represented the United States at the 1932 Summer Olympics in Los Angeles, California.

Booth learned to swim at the Hollywood Athletic Club where he swam on a team that won the AAU relay in freestyle in both 1929 and 1931.

[4] In May, 1931 Booth was unanimously elected to lead the Stanford Swimming Team as captain, replacing Austin Clapp, a 1928 and 1932 Olympic medalist.

[10] At the 1932 U.S. Olympic Trials, Booth, swam for the Los Angeles Allied Athletic Club at Coney Island Park Pool in Cincinnati, Ohio, in mid-July 1932, where he qualified for the 800-meter freestyle relay.

In his professional life he was a businessman, the CEO of Interstate Engineering, a diverse electronic manufacturing company, founded in 1956, that by 1962 made products ranging from vacuum cleaners to missile instrumentation, and produced undercarriage parts for trailers.