Aliya Farkhatovna Mustafina (Russian: Алия Фархатовна Мустафина ; Tatar: Cyrillic Алия Фәрһәт кызы Мостафина, Latin Aliä Färhät qızı Mostafina; born 30 September 1994) is an artistic gymnast from Russia. She is the 2010 world champion in the all-around, the 2012 and 2016 Olympic uneven bars champion, and a seven-time Olympic medalist.
At the 2012 Summer Olympics, Mustafina won four medals, making her the most decorated gymnast of the competition and the most decorated athlete in any sport except swimming. At the 2016 Summer Olympics, she became the first female gymnast since Simona Amânar in 2000 to win an all-around medal in two consecutive Olympics, and the first since Svetlana Khorkina (also in 2000) to defend her title in an Olympic apparatus final. With seven Olympic medals, Mustafina is tied with Khorkina for the most won by a Russian gymnast (not including Soviets). She has the honor to be one of the nine gymnasts to ever medal in every single event in history at the World History in a major championships.