Márta Károlyi
| Márta Károlyi | |
|---|---|
| Simone Biles receiving medal from Károlyi in 2012 | |
| Born | Márta Erőss August 29, 1942 Székelyudvarhely, Kingdom of Hungary (now Odorheiu Secuiesc, Romania) | 
| Citizenship | 
 | 
| Occupation | Gymnastics coach | 
| Known for | Romanian centralized gymnastics training system and coach to many world champions in Romania and U.S. | 
| Spouse | |
| Children | Andrea Károlyi Wise | 
| Parent(s) | Júlia Bálint, Ernő Erőss | 
Márta Károlyi (Hungarian: [ˈmaːrtɒ ˈkaːroji]; née Erőss; born August 29, 1942) is a Romanian-American gymnastics coach and the former national team coordinator for USA Gymnastics. She and her husband, Béla, are ethnic Hungarians from Transylvania, Romania, who trained athletes in Romania, including Nadia Comăneci, before defecting to the United States in 1981. Béla and Márta Károlyi have trained nine Olympic champions, fifteen world champions, sixteen European medalists and many U.S. national champions, including Comăneci, Mary Lou Retton, Betty Okino, Kerri Strug, Teodora Ungureanu, Phoebe Mills, Kim Zmeskal, and Dominique Moceanu.