Look up By in Wiktionary, the free dictionary.

By or BY means the following:

• by or bye, a free pass through a round of competition in a tournament
• Bavaria (BY), official abbreviation of the German federal state Bavaria
• By, Doubs, a commune in the Doubs département of France
• Belarus (BY), World Meteorological Organization and 2-letter ISO 3166-1|ISO country code
  • .by, the ccTLD for Belarus
• Britannia Airways IATA airline code
• Budget Year (BY), a synonym for Fiscal Year
• Burundi (BY), FIPS Pub 10-4 and obsolete NATO digram country code
• By, John Lieutenant-Colonel, 19th century British military engineer famous for his work in Canada
• Byelorussian Soviet Socialist Republic, obsolete (1992) 2-letter ISO country code
• Thomsonfly IATA airline code

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