Shaunae Miller-Uibo, née Shaunae Miller, (15 April 1994) is a Bahamian track and field sprinter who competes in the 200 and 400 metres. She is a two-time Olympic champion after winning the women's 400 metres at the 2016 Rio Olympics and again at the 2020 Tokyo Olympics.
At the World Athletics Championships, Miller-Uibo won silver medals in the 400 m in 2015 and 2019, and a bronze at the 200 m in 2017 when she also placed fourth at her longer distance. In 2022, she won her first world outdoor and indoor 400 m titles. She held North American records in the 400 m both outdoors and indoors until broken in 2024 and 2023 respectively. Her marks of 48.36 (improved at the Tokyo Games) and 50.21 seconds place her respectively eighth and joint 14th on the world all-time list. She holds world bests over the 300 metres outdoors and indoors.
