Katy Sealy (born 15 October 1990) is a Belizean international athlete.
She was brought up in Suffolk in England but qualifies for Belize because her father was born there.
She lived in Bawdsey.
Sealy was a heptathlete at the Glasgow 2014 Commonwealth Games and carried the flag for Belize.
She also competed as a heptathlete at the 2018 Commonwealth Games in the Gold Coast, Australia.
Despite being a previous Central American heptathlon champion, she failed to qualify for the heptathlon at the 2016 Summer Olympics in Rio de Janeiro.
Sealy was however given a wildcard for the 100 metres hurdles which she competed in.
She has set a number of Belizean athletic records, including indoor 800 metres, high jump, and javelin throw.