Jordyn Marie Wieber (born July 12, 1995) is a retired American artistic gymnast. She was a member of the U.S. Women's Gymnastics team, dubbed the Fierce Five by the media, at the 2012 Summer Olympics, where she won a gold medal in the team competition. She was also a member of the gold-winning American team at the 2011 World Championships, where she also won the individual all-around. Wieber is currently volunteer assistant coach of the women's gymnastics team at the University of California, Los Angeles.
Wieber was born on July 12, 1995, in DeWitt, Michigan, the daughter of Rita (née Reifsnyder) Wieber, who is an emergency room nurse and exercise physiologist, and David Wieber, who is a director at a health-care subsidiary. She is the third oldest of four children, and her family attends the St. Jude Catholic Church in DeWitt. Her maternal grandmother is of Lebanese descent.
Wieber started gymnastics at a young age. "I was probably two or three. My parents noticed that I had unusually bigger muscles than a typical little kid, so they put me in gymnastics. A little fun class where I could run around and play and stuff and just have fun. Then I actually stopped for a little bit to do dance class. When I was four I went back and that’s kind of when I started getting really into it." She later enrolled with John Geddert, who handpicked her to his Silverstars program, and by age 10, she had qualified to Level 10 in the Junior Olympic program, and then qualified for international elite a year later in 2006.