Cătălina Ponor (Romanian pronunciation: ; born 20 August 1987) is a retired artistic gymnast who represented Romania at the 2004, 2012 and 2016 Summer Olympic Games. She won three gold medals at the 2004 Summer Olympics in Athens on balance beam, floor and as part of the Romanian team. She also earned a silver medal on floor and bronze medal as part of the Romanian team at the 2012 Summer Olympics in London, as well as multiple World Championship and European Championship medals. She announced her plans to retire from gymnastics after the 2017 Artistic Gymnastics World Championships, in Montreal. During her career, she won 23 Olympic, World and European medals. More than a half of them (12) were gold medals.
Ponor was born in Constanța and started gymnastics when she was four years old. In 2002, she was discovered training in Constanța by the Romanian national team coaches, Octavian Bellu and Mariana Bitang, who invited her to join the national team.