Sada Williams (; born 1 December 1997) is a Barbadian sprinter competing primarily in the 200 and 400 metres. She won the bronze medal in the 400 m at the 2022 World Championships, becoming the first Barbadian woman ever to win a medal at the World Athletics Championships. Williams took a gold in the event at the 2022 Commonwealth Games.
She represented her country at the 2017 World Athletics Championships without reaching the semifinals.
Williams competed at the 2020 Tokyo Olympics.
She had a breakthrough 2022 season, finishing third in the 400 m at the World Championships Eugene 2022 in July. She improved her own national record to 49.75 seconds, coming home only behind Shaunae Miller-Uibo (49.11 s) and Marileidy Paulino who ran a time of 49.60 s. About two weeks later at the 2022 Commonwealth Games in Birmingham, Williams won the title in a Games record time of 49.90 seconds. She continued her fine season in August by claiming silver behind only Miller-Uibo (49.40 s) at the NACAC Championships in Freeport, Bahamas, with a time of 49.86 seconds.
International competitions
1Disqualified in the final
2Did not finish in the final
Personal bests
100 metres – 11.66 (0.0 m/s, St. Michael 2017) 200 metres – 22.61 (+1.6 m/s, St. Michael 2016) 400 metres – 49.58(Budapest, HU 2023)