Sandefjord is a municipality in Vestfold county, Norway. It is located in the traditional district of Vestfold. The administrative centre of the municipality is the city of Sandefjord. Other population centres in Sandefjord include Andebu, Fevang, Fokserød, Fossnes, Freberg, Hafallen, Helgerød, Himberg, Høyjord, Kodal, Lahelle, Melsomvik, Råstad, Solløkka, Stokke, Storevar, Strand, and Unneberg.