Alexander Alexandrov (or Aleksandr Aleksandrov depending on transcription) may refer to:
- Aleksandr Danilovich Aleksandrov (1912–1999), Russian mathematician and physicist
- Aleksandr Pavlovich Aleksandrov (born 1943), Russian cosmonaut
- Aleksandar Panayotov Aleksandrov (born 1951), Bulgarian cosmonaut
- Alexander Vasilyevich Alexandrov (1883–1946), Russian composer
- Aleksandar Yordanov Aleksandrov, known as Alex, Bulgarian footballer, born on 19 January 1975
- Aleksandar Dragomirov Aleksandrov, Bulgarian footballer, born on 13 April 1986
- Aleksandar Emilov Aleksandrov, Bulgarian footballer, born on 30 July 1986
- Aleksandar Aleksandrov, Azerbaijani (rower), born on 9 April 1990