Riley Shannon McCusker (born July 9, 2001) is an American artistic gymnast and a four-time member of the United States women's national gymnastics team (2016–Present). She is primarily known for her strong execution, form, extension, grace, and difficulty on uneven bars and balance beam, as well as her all-around capabilities. She is the 2019 Pan American Games and 2017 United States national uneven bars champion. In the all-around, she is the 2019 Pan American Games silver medalist and a two-time United States national bronze medalist (2017, 2018). She has also won six medals at the USA Gymnastics National Championships in her senior career. She was a member of the gold-medal-winning American team at the 2018 World Championships and the 2019 Pan American Games.
McCusker was born to Tom and Jessica McCusker in 2001, and she has three siblings. They include an older brother, and a younger brother and sister. She began gymnastics in 2008 and was homeschooled. She lived in Brielle, New Jersey, but has recently moved to Arizona as of February 2020.