Alexander (disambiguation)
The name Alexander may refer to:

 Alexander, a Platonian
 Alexander (fictional), the name of one of Dr. Crusher's imaginary twins
 Alexander (warrior), a lover of Lwaxana Troi
 Alexander the Great, the Earth historical figure
 Alexander Rozhenko, the son of Worf and K'Ehleyr, often referred to solely by his given name.

Real world
 Alexander (actor), a background actor on Deep Space Nine.