Erica Georgina Terpstra (born 26 May 1943) is a retired Dutch politician of the People's Party for Freedom and Democracy (VVD).
Terpstra, a swimmer by occupation, participated in the 1960 and 1964 Summer Olympics. She was elected as a Member of the House of Representatives after the Dutch general election of 1977 serving from 8 June 1977 until 22 August 1994 when she became Undersecretary for Health, Welfare and Sport in the Cabinet Kok I serving from 22 August 1994 until 3 August 1998. After the Dutch general election of 1998 Terpstra returned to the House of Representatives serving from 19 May 1998 until 15 December 2003 when she was selected as President of the Dutch Olympic Committee*Dutch Sports Federation (NOC*NSF).
During the early 1960s Terpstra was a well-known freestyle swimmer in the Netherlands, specializing in the 100 meters distance. She participated in the 1960 Summer Olympics in Rome where she came sixth in the 100m Freestyle, and fourth in the 4x100 Medley Relay. Following the Olympics she joined the HZ&PC swim team in The Hague. While a member of this team she was again chosen to be an Olympic athlete for the Netherlands and won two medals at the 1964 Summer Olympics in Tokyo: the bronze medal in the 4x100 metres Freestyle Relay and the silver in the 4x100 metres Medley Relay (together with Pauline van der Wildt (starting), Toos Beumer (second relay) en Winnie van Weerdenburg (third relay)). At her only individual start, on the 100m Freestyle, she finished in fourth position in the final.