Before Amar, Mehboob Khan had made Aan in colour but he thought that Amar will look good in b/w. Later Mother India & Son of India were made in colour. Amar came in between these films. Music meastro Naushad Ali and cinematography Fareedom Irani, worked in most Mehboob Productions.
Meena Kumari was originally cast and even shot scenes for the film but had to bow out due to scheduling conflicts. Madhubala replaced her.