Ruben Aleksanyan (; born 14 March 1990) is an Armenian weightlifter. He won a gold medal at the 2009 U23 European Championships in Władysławowo, Poland, and a silver medal at the 2010 European Championships in Minsk, Belarus. He was still under twenty years of age when he lifted a combined total of 432 kg (195 kg in the snatch and 237 kg in the clean and jerk), which was a European Under-20 record, in losing to Evgeny Chigishev. He competed at the 2016 Summer Olympics in the Men's +105 kg.