Alexey Semyonov

• Alexey [Alexandrovich Semyonov], Russian association football player and coach
• Alexey Semyonov (mathematician), Russian scientist-mathematician, academician of the Russian Academy of Sciences
• Aleksey Semyonov (Uzbekistani footballer), Uzbekistan football defender
• Alexei [Semenov (hockey player)|Alexei Semenov], Russian ice hockey defenceman
• Aleksei [Vladimirovich Semyonov], Russian association football player
• Alexei Semyonov (ice hockey), Russian ice hockey goaltender