Boo stands for:
- Boô ( pasture stall )
- Boo (Spain ), a parish of the municipality Aller, Asturias
- Boo (programming language)
- Boo (Sweden), place in Sweden.
- Built Operate Own, operator model.
- Constellation Bootes (lat. boat ), abbreviation in the nomenclature of the fixed stars
Boo is a surname, and may refer to:
- Betty Boo (born 1970 ), British singer
- Boo Siang Kim ( born 1938 ), Malaysian weightlifter
BO -O stands for:
- Oruro Department, ISO -3166 -2 code of the Bolivian department of