Raj Tilak (transl. Coronation) is a 1958 Indian Hindi-language Ruritanian romance epic film written by the Gemini Studios story department, consisting of K. J. Mahadevan, C. Srinivasan and Kothamangalam Subbu, along with Ramanand Sagar, while the film was directed and produced by S. S. Vasan. The film features Gemini Ganeshan, Padmini, Vyjayanthimala in the lead roles, along with Pran, Gajanan Jagirdar, Bipin Gupta, Manmohan Krishna, Lalita Pawar, Durga Khote, Agha, Shammi forming an ensemble cast. The music was composed by C. Ramchandra.

Gemini Studios was an Indian film studio based in Madras, Tamil Nadu. It was launched when S. S. Vasan, a businessman of many ventures bought Motion Picture Producers' Combines from Krishnaswamy Subrahmanyam and renamed it. The studio re-opened under the name Gemini. Despite the common beliefs about a lucky racehorse or the astrological sign of his wife, it was the logo Vasan chose that led to the name. Subrahmanyam had shown him a picture of his very young boys, blowing on toy trumpets in the nude. Vasan chose the pose to craft the logo and hence the name Gemini—The Twins. The new facade also had statues of ‘The Gemini Twins’, blowing the bugle. Gemini Studios served as a breeding ground for innumerable artists and technicians for the south Indian Film Industry. The Gemini twins became a household symbol and the Gemini flyover was named after the original studio at that junction. Gemini Studios is one of the few producers in Tamil cinema to survive beyond 100 productions along with AVM, Modern Theatres, Thenandal Films, etc.