Leandro Marques Guilheiro (born 7 August 1983) is a Brazilian male judoka. He won bronze medals in the lightweight (73 kg) division at the 2004 Summer Olympics in Athens, Greece and at the 2008 Summer Olympics in Beijing. He became the first Brazilian judoka to win medals at two consecutive Olympic Games. Guilheiro plays a classical style of judo fighting in an upright stance and using techniques such as uchi mata, ippon seoi nage, morate seoi nage and o soto gari. He has done modeling work in Brazil.