John Antonas (born 12 September 1951) is a Bahamian former professional tennis player.

Born in Nassau, Antonas represented the Caribbean at the 1975 Nations Cup (later World Team Cup) and in the Davis Cup from 1975 to 1982.

[1] In 1989 he got the opportunity to compete for the Bahamas Davis Cup team as playing captain of the side, which was debuting in the competition.

[2] Antonas ranked 258 on the professional tour and played collegiate tennis for the University of Alabama.

[3] In 1979, while a tennis pro in the Bahamas, Antonas played tennis against the Shah of Iran, Mohammad Reza Pahlavi.