Helen Angwin (born c. 1931) is an Australian former tennis player who was active in the first half of the 1950s.

In 1952 she was runner-up in the singles event of the Australian Championship, losing the final in straight sets to compatriot Thelma Coyne Long.

In the semifinal she had defeated first-seeded and reigning champion Nancye Wynne Bolton.

[2][3] In January 1952 Angwin won the singles title at the South Australian Championships in Adelaide, defeating Gwen Thiele in the final in three sets.

[6] In September 1954 she announced her retirement from tennis due to her upcoming marriage.