502 may refer to:
502 (number), a number
AD 502, a year
502 BC, a year
Area code 502, a North American telephone area code in northern central Kentucky, including Louisville
List of highways numbered 502
"502" (song), by Megadeth
"502", a song by Marduk on the album Panzer Division Marduk about the 502nd Heavy Panzer Battalion.
HTTP 502, the HTTP error response status for "Bad Gateway"
Fiat 502, a passenger car