Larion Serghei was a Romanian sprint canoeist who represented the national team during the mid-1970s. In 1975 Serghei and compatriot Policarp Malîhin competed at the Canoe Sprint World Championships in Beograd, winning silver in the K2 1,000 metres, along with bronze in the K2 500 metres. One year later the pair were selected to compete at the Montréal Olympics, where they also won bronze in the K2 500 metres, in addition to placing seventh in the K2 1,000 metres. For their performance at the Games both men were awarded with the Order of Sports Merit, 3rd Class.