Cheng Fei (Chinese: 程菲; pinyin: Chéng Fēi; born May 29, 1988) is a Chinese retired artistic gymnast. She is a three-time World Champion on the vault (2005–2007) and 2006 World Champion on floor exercise. She was a member of the gold medal-winning Chinese teams for the 2006 World Artistic Gymnastics Championships in Aarhus, Denmark and 2008 Olympic Games in Beijing, China. She was also a member of the silver medal-winning Chinese team for the 2007 World Artistic Gymnastics Championships in Stuttgart, Germany.

Cheng Fei was born in central China's Hubei Province to a father who was a shipping clerk and a mother who worked in a tire factory, not a very wealthy background. Indeed, said her mother, "Our family was poor so we hoped Cheng Fei could in some way change her life...we thought maybe being a professional athlete is good for her." And so her parents approached a gymnastics coach about training her by the time she was three and her father practiced calisthenics with her every morning before school. By the age of five, Cheng won her first competitive medal at a local competition. The 7-year-old Cheng was sent to Wuhan, where she joined the Wuhan Institute of Physical Education and officially entered the national sports program. Her first coach, Yao Juying remembered her as being uniquely 'hard-working' and extraordinarily focused. At ten, she was invited to join the Hubei provincial team. In late 2001, at the age of 13, she was accepted to the Chinese National Team. Her coaches are head coach Lu Shanzhen, and Liu Qun Lin.

Cheng is known for her powerful tumbling and her expressive floor routines. Sandra Izbașa has described her as a perfectionist, a great sport and a good friend.

She retired in June 2012 due to a ruptured Achilles tendon while performing a tumbling pass on the floor.

Cheng is a vaulting and floor exercise specialist. She has had national success in gymnastics as a two-time Chinese National Floor Exercise Champion (2004–2005), a two-time Chinese National Vault medalist (2003 and 2005) and the 2004 Chinese National Balance Beam Champion.

Internationally, she has been very successful as well. She competed with the Chinese team at the 2004 Olympic Games in Athens, Greece and although the team did not medal, she performed very well, scoring 9.475 on vault and 9.662 on floor. She also qualified for and competed in the floor exercise final, finishing 4th with a score of 9.412. She was the bronze medalist at the 2004 World Cup Final on floor exercise.

On 23 November 2005 Cheng made history at the 2005 World Artistic Gymnastics Championships in Melbourne, Australia, for being the first gymnast ever to successfully perform one of the most difficult vaults ever attempted by a woman. The vault, consisting of a round-off onto the springboard, a half-turn onto the vaulting horse and a 1½ somersault with a 540-degree turn in a straight body position, is now officially recognized in the FIG Code of Points as "The Cheng". It is one of the most difficult vaults in the code. During Event Finals on vault in Melbourne, Cheng scored 9.725 in her first vault (S.V: 10.0) and 9.587 in her second vault (S.V: 10.0), the "Cheng".

At the 2006 World Championships in Aarhus, Denmark, she competed on vault and floor exercise, qualifying in first position for both event finals. Her performances on those two pieces of apparatus were instrumental in securing victory for China in the team championship, but they also earned her the individual vault and floor exercise world titles. Cheng also won the gold medal on the vault at the 2006 World Cup Final in São Paulo, Brazil.