"Didi Tera Devar Deewana" is a 1994 Hindi-language filmi song performed by Lata Mangeshkar and S. P. Balasubrahmanyam for the soundtrack of the 1994 Indian musical romantic drama film Hum Aapke Hain Koun..!.

DEVAR Entertainment LLC is an American technology company headquartered in Marlton, New Jersey, that specializes in the development of augmented reality content and products.