Mansoor Ali Khan Pataudi then captain of Indian cricket team dated Simi Garewal and would got to meet her in the sets and the crowd would go crazy seeing him.
This was the first film Dev Anand had directed, unoficially, Amar Jeet was credited as director of the film.
The whole film is in b/w, the climax was shot in colour.
When Dev Anand who take a close up of himself Simi Garewal would tell him jokingly that the film should have been titled Ek Dev and not Teen Devian.
Teen Deviyan was the first major film of Simi Garewal and Kalpana.