Andebu is a municipality in Vestfold county, Norway. The administrative centre of the municipality is the village of Andebu. The parish of Andebo was established as a municipality on 1 January 1838 (see formannskapsdistrikt).Andebu has large areas of woodland. The main villages are Andebu, Høyjord, and Kodal. The church buildings in all three villages are from the Middle Ages; the one in Høyjord is a Stave church (Høyjord stave church) which was built around 1150-1200.
The Old Norse form of the name was Andabú. The meaning of the first element is unknown and the last element is bú which means "district". Prior to 1889, the name was written "Andebo".The coat-of-arms is from modern times. They were granted on 12 December 1986. The arms show three silver triangles, each for one of the three villages/parishes in the municipality: Andebu, Høyjord, and Kodal. The three triangles also form a the letter A, the initial of the municipality. The colour green represents agriculture and forestry