538 (disambiguation)

538 was a year in the Julian calendar.

538 may also refer to:

500 (number) § 530s]]
 * The number of electors in the United States Electoral College
 * FiveThirtyEight, American political and statistical analysis blog
 * Radio 538, Dutch radio station aimed at young people
 * The number 538, see [[500 (number)#530s|