Stephanie Jayne Cook, MBE (born 7 February 1972)[1] is a British retired modern pentathlete.

She was president of the Oxford University Modern Pentathlon Association in 1995–1996, and won the women's individual title in the Varsity match against Cambridge in 1997.

Although reported as "having put her medical career on hold", she was supported through her training from 1998 to 2000 by Consultant Surgeon Mark Whiteley who funded a research job for her in Guildford, during which she published three papers with him.

[5] Cook won the gold medal in the Sydney 2000 Olympics in the women's modern pentathlon,[1] the first time that the event was included in the games.

[1] In the 2001 New Year Honours, Cook was appointed as a member of the Order of The British Empire for services to modern pentathlon.