Dum Dum (Bengali দমদম Dômdôm) is a city and a municipality in North 24 Parganas district in the state of West Bengal, India. It is one of the main entry points to the city of Kolkata, providing a number of transportation facilities into that city from the northwest, such as Netaji Subhas Chandra Bose International Airport, formerly Dum Dum Airport, which offers domestic and international flights. Dum Dum has developed into a modern commercial centre and also hosts the Ordnance Factory Dumdum (OFDC) of the Ordnance Factories Board, which manufactures armaments and other equipment for the Indian Armed Forces. Dum Dum region is about 10 km from the city centre, defined as the Esplanade, Kolkata. The nearby localities include Nager Bazar, Motijheel, Ghughu Danga, Private Road, Chatakal, Jawpur, Rajbari and Lal Bagan.
Dum Dum is located at 22.62°N 88.42°E / 22°37′N 88°25′E. It has an average elevation of 11 metres (36 feet).