Frank Andrew Parker (born Franciszek Andrzej Pajkowski, January 31, 1916 – July 24, 1997) was an amateur & later professional American male tennis player of Polish immigrant parents who was active in the 1930s and 1940s.

[5] Aged 12, he won his first national title, the boys' indoor championship played at the Seventh Regiment Armory in New York.

[6][7] In 1933, when he was 17, he won the singles title at the U.S. Men's Clay Court Championships, defeating Gene Mako in the final in straight sets.

Each of his four losses in a singles final in Cincinnati came against a fellow future International Tennis Hall of Famer: George Lott in 1932, Bryan Grant in 1933 and 1939, and Bobby Riggs in 1938.

"[11] In his autobiography, Jack Kramer wrote "even as a boy (Parker) had this wonderful, slightly overspin forehand drive.

A few years later, he worked hard to regain his original forehand, and according to Kramer, greatly improved his stroke, but it never was as good as it had once been.

[17] In October 1949, Parker signed a one-year contract with Bobby Riggs to become a professional tennis player.

[3][4] Parker joined the professional tennis circuit in 1949 and as a consequence was banned from competing in the amateur Grand Slams until the start of the Open Era.