Denean Elizabeth Howard-Hill (born October 5, 1964) is an American athlete who competed mainly in the 400 metres.

It was a reversal at the 1988 Summer Olympics held in Seoul, South Korea in the 4 x 400 metres relay, where both sisters won the silver medal, but Denean ran in the final with her teammates Diane Dixon, Valerie Brisco-Hooks and Florence Griffith Joyner.

Later teams with Denean broke the record for the slightly shorter 4x400 metres relay, after sister Atra graduated and the rest of the family moved to Kennedy High School (Los Angeles).

[7] Denean was the California High School Athlete of the Year at Kennedy in 1982, following in the footsteps of her sister Sherri.

[9] Her 1982 52.39 was the NFHS national high school record for eighteen years, before it was beaten by Monique Henderson.