501 (disambiguation)

501 is a year in the Common Era.

501 may also refer to:

• 500 BC, a year in the era B.C.
• 501 (number)

Military

• Avro 501, a military seaplane
• 501 Squadron (disambiguation), several units
• 501 Organization, a fictional unit from a Japanese anime series Ghost in the Shell: Arise

Transportation

• List of highways numbered 501, one of a number of highways
• Flight 501 (disambiguation), several flights
• 501 Queen, a streetcar route in Toronto
• Allison 501, an aircraft turboprop engine
• BMW 501, a BMW car model
• British Rail Class 501, a U.K. train model
• Fiat 501, a Fiat car model

Other uses

• 501, the name of a game of darts
• The record score in first-class cricket by Brian Lara, and also Lara's brand of clothing in honour of this event
• a type of Levi's jeans
• an HTTP status code meaning Not implemented
• SMTP Error - 501, an SMTP status code meaning Syntax error in parameters or arguments
• 501(c), a type of tax exemption for non-profit organizations in the United States
• Area code 501, covering part of Arkansas, U.S.
• Year 501: The Conquest Continues, by a book by Noam Chomsky
• the lowest possible VantageScore credit score, corresponding to very poor credit
• 501 Urhixidur, an asteroid

See also

• 501st (disambiguation)
• All pages with titles containing 501