Lysander is a town in Onondaga County, New York, United States. The population was 21,759 at the 2010 census. The town was named after Lysander, a Spartan military leader, by a clerk interested in the classics. The town is in the northwest corner of Onondaga County and is northwest of Syracuse. Much of the town is a suburb of Syracuse.
Lysander's population was greater than 21,759 in 2010.