Joslyn Hoyte-Smith (born 16 December 1954 in Barbados) is a former British 400 metres athlete. She competed in the 1980 Summer Olympics in Moscow, where, as part of the women's 4×400 metres relay team, she won a bronze medal. She also ran in the 4 × 400 m relay team at the 1984 Summer Olympics in Los Angeles. She was the winner of the 400m at the UK Championships in 1979, 1981 and 1983. She also won the 400m title at the AAA Championships in 1981.She now lives in south east London.
She is currently Athlete Support Manager for Yorkshire.
She is the sister-in-law of British sprinter Wendy Hoyte, who married her brother Les Hoyte (also a sprinter).