Jasauna Dennis (born 30 December 2004) is a Jamaican sprinter.
Early life He attended St. Elizabeth Technical High School in Saint Elizabeth Parish, Jamaica.
Career He won a silver medal in the men's 4 x 400 metres relay, and a bronze medal in the mixed 4 x 400 metres relay at the 2022 World Athletics U20 Championships in Cali, Colombia. He won the individual U20 400 metres at the 2023 CARIFTA Games in Nassau, Bahamas in April 2023. In 2024, he ran a personal best outdoors of 45.38 seconds.
Competing for the University of South Carolina, he ran an indoor personal best of 46.32 at the SEC Indoor Championships preliminaries on 1 March 2025. He then lowered it again to 46.02 later-on at the meet.
He won a silver medal in the men's 4 x 400 metres relay at the 2025 World Athletics Indoor Championships in Nanjing. Dennis won the gold medal in the men’s 400 meters at the 2025 Junior Pan American Games in Asunción, Paraguay, with a time of 45.56 seconds to set a new junior Pan American record. He was selected for the Jamaican relay team for the 2025 World Athletics Championships in Tokyo, Japan. He ran as the Jamaican team reached the final of the men's 4 x 400 metres relay. That year, he signed an NIL contract with sportswear brand Puma.
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