Roman Aleksandrovich Konstantinov (; born August 15, 1983 in Belovo, Kemerovo Oblast) is a Russian weightlifter. He won the bronze medal for the 94 kg class at the 2006 World Weightlifting Championships in Santo Domingo, Dominican Republic, and eventually claimed his first ever career title at the 2007 World Weightlifting Championships in Chiang Mai, Thailand, with a total of 397 kg. He also added a silver medal to his collection from the 2007 European Weightlifting Championships in Strasbourg, France.