Renn Crichlow (born May 9, 1968) is a Canadian sprint kayaker who competed from the late 1980s to the late 1990s. He won a complete set of medals at the ICF Canoe Sprint World Championships with gold (K-1 500 m: 1991), a silver (K-1 500 m: 1993), and a bronze (K-1 200 m: 1995).
Crichlow also competed in three Summer Olympics, earning his best finish of seventh in the K-4 1000 m event at Atlanta in 1996.
Crichlow was born in Ottawa, Canada and grew up in the Ottawa suburb of Nepean. He pursued many sports and eventually found his way to the Rideau Canoe Club. He won his first Canadian Canoe Association National Championship at the age of 16.