A building collapsed on tribal land in Thane in Maharashtra, India, causing 74 deaths.

On 4 April 2013, a building collapsed on tribal land in Mumbra, a suburb of Thane in Maharashtra, India. It has been called the worst building collapse in the area. Seventy-four people were killed, while more than 100 survived. The search for additional survivors ended on 6 April 2013.

Thane is a metropolitan city located on the northwestern side of the state of Maharashtra in India and on the northeastern side of Mumbai. It is an immediate neighbour of Mumbai city proper, and a part of the Mumbai Metropolitan Region. It is situated in the north-eastern portion of the Salsette Island.

Maharashtra is a state in the western peninsular region of India occupying a substantial portion of the Deccan Plateau. It is bordered by the Arabian Sea to the west, the Indian states of Karnataka and Goa to the south, Telangana to the southeast and Chhattisgarh to the east, Gujarat and Madhya Pradesh to the north, and the Indian union territory of Dadra and Nagar Haveli and Daman and Diu to the northwest. Maharashtra is the second-most populous state in India, the third most populous country subdivision in South Asia and the fourth-most populous in the world.