Grace Harder (born December 16, 2004) is an American athlete who competes in trampoline gymnastics. She won a bronze medal at the World Trampoline Gymnastics Championships in 2023.
Harder is the younger sister of fellow trampolinist Trevor Harder. Both Trevor and Grace qualified for the 2021 U.S. Olympic Team Trials and USA Gymnastics National Championships.
Harder started gymnastics when she was nine years old. She competed at the 2025 World Games.