Aleksandr Maseikov (Sometimes listed as Aleksandr Maseykov, Belarusian: Аляксандр Анатолевіч Масяйкоў, born July 26, 1971), is a Soviet-born Belarusian sprint canoeist who competed from the early 1990s to the early 2000s. He was born in Mogilev and was affiliated with Dynamo Mogilev. Competing in three Summer Olympics, he won a gold in the C-2 500 m event at Barcelona in 1992 representing the Unified Team.
Maseikov also won three medals at the ICF Canoe Sprint World Championships with two golds (C-2 200 m: 1994, C-4 200 m: 1997) and one silver (C-4 200 m: 1998).