Diego Matias Hypólito (Brazilian Portuguese: ; born June 19, 1986 in Santo André) is a Brazilian gymnast and the 2005 and 2007 World Champion on the floor exercise. He is the first male gymnast from Brazil, and South America, to win a medal at the World Championships. He also won 63 medals in World Cup. Hypólito has represented Brazil in 3 Olympics: 2008, 2012 and 2016. He received the silver medal in Floor at the 2016 Olympic Games in Rio. He is also the younger brother of Daniele Hypólito, the first Brazilian gymnast ever to medal at Worlds.
Hypólito began gymnastics at the age of 7, following in his older sister's footsteps. He won the floor exercise event in the children's division at the Brazilian National Championships in 1997 and was the all-around junior National Champion in 2001.
By the age of 21, Hypólito had competed in five World Gymnastics Championships, in 2002, 2003, 2005, 2006 and 2007. A floor exercise specialist, he qualified for the FX event finals in all five competitions, placing fifth in 2002, fourth in 2003, earning the gold medal in 2005, the silver medal in 2006, and the gold again in 2007. With his 2005 win, Hypólito became the first male South American gymnast to medal at Worlds.