Sergiu Toma (born 29 January 1987) is a Moldovan-born Emirati judoka.^[4] He competed for the United Arab Emirates in the 81 kg category at the 2016 Olympic Games and defeated Takanori Nagase to enter the semi-finals. He lost his semi-final match to Khasan Khalmurzaev, but then beat Matteo Marconcini in the bronze medal match.^[2] At the 2008 and 2012 Olympics he competed for Moldova but was eliminated in the early rounds.^[1][5]

Toma has a law degree from the Moldova State University. In 2008 he considered retiring from sport due to financial problems. He stayed, and in 2011 was named Moldovan Athlete of the Year. After the 2012 Olympics he moved to the United Arab Emirates, together with five other Moldovan judoka and the national coach Vasile Colta.^[5]