Raigad district, previously Colaba district, is a district in the Konkan division of Maharashtra, India. The headquarters of the district is Alibag. Other major cities in the district are Panvel, Karjat, Navi Mumbai, Khopoli, Shrivardhan and Mahad.

Alibag, also known as Alibaug, is a coastal city and a municipal council in Raigad district of Maharashtra, India. It is the headquarters of the Raigad district and is south of the city of Mumbai. Alibag is part of the Mumbai Metropolitan Region and is situated at a distance of about 96 km from Mumbai and 143 km from Pune. Alibag is a holy place for Goddess Shree Padmakshi Renuka. She is also known as goddess of Konkan.