Namesakes
Aleksey
(m) 1629-1676 
Russian Grand Dukes and Tsars 1645-1676
Aleksey Denisenko
(m) 1993-
Olympic Medalists 2012 taekwondo (bronze)
Aleksey Kudryavtsev
(m) 1972-
Olympic Medalists 1992 swimming - 4x200 m freestyle relay (gold)
Aleksey Leonov
(m) 1934-2019
Notable Explorers and Adventurers
Aleksey Obmochaev
(m) 1989-
Olympic Medalists 2012 volleyball (gold)
Aleksey Spiridonov
(m) 1951-1998
Olympic Medalists 1976 hammer throw (silver)
Aleksey Voyevodin
(m) 1970-
Olympic Medalists 2004 50 km walk (bronze)
Alexei Alexandrovich of Russia
(a.k.a. Aleksey) (m) 1850-1908
Other Royalty 1850-1908 Russia (grand duke)
Alexei Nikolaevich, Tsarevich of Russia
(a.k.a. Aleksey) (m) 1904-1918
Other Royalty 1904-1918 Russia (prince)
Saints
Alexej von Jawlensky
(a.k.a. Aleksey) (m) 1864-1941
Notable Artists
Aliaksei Abalmasau
(a.k.a. Aleksey) (m) 1980-
Olympic Medalists 2008 canoe sprint (gold)