Stephenie Ann McPherson (born 25 November 1988) is a Jamaican track and field athlete, who specializes in the 400 metres. She has won a bronze medal in the event at the 2013 World Championships, and then placed in the finals of the 2016 Olympics and all three following World Championships between 2015-2019. McPherson added medals in the 4 x 400 metres relays, taking a silver at the 2016 Olympics, a gold in 2015 in Beijing, and a bronze in 2019.
In June 2021, McPherson went sub-50 seconds for the first time since 2013, the only year in which she had achieved it, setting her new personal best.