By
By stands for:
- By (Doubs) , commune in the Doubs department in France
- By (Avesta) , part of the Swedish municipality of Avesta
- -by , a Nordic or Saxon place name ending
- John By (1781–1836), British engineer
BY or by (partly from Cyrillic БУ or бу ) is an abbreviation for:
- Bavaria (country code DE-BY according to ISO 3166-2)
- Birmingham , UK (license plate)
- Britannia Airways , former British airline (IATA code)
- Bulgan-Aimag , Mongolia (license plate)
- Okres Bytča , Slovakia (license plate)
- Thomson Airways , British airline (IATA code)
- Thomsonfly , former British airline (IATA code)
- Belarus (Беларусь Belarus , country code according to ISO 3166-1; license plate)
.by stands for:
- .by , the top-level domain of Belarus
