Filmmakers like Madhur Bhnadarkar and Hansal Mehta took to their Twitter accounts to express their admiration for Castro, who died late Friday aged 90.
The revolutionary icon, one of the world's best-known and most controversial leaders, survived several US assassination attempts and premature obituaries, but in the end proved mortal after suffering a long battle with illness.
Castro ruled Cuba for almost half a century before handing over the reins to his brother Raul in 2008.
Here is what the celebrities had to say:
Madhur Bhandarkar: Death of Fidel Castro marks the end of an important era in Cuban history. An influential and a revolutionary leader. RIP
Hansal Mehta: Almost travelled to Havana. Visa issues made me change plans. Wish I'd made it before the passing away of Fidel Castro
Ashwin Mushran: Sit back and Fidel with a Cigar today if you must! For the end of an era Fidel Castro.
Nikkhil Advani: Whether you agreed or disagreed with Castro you couldn't help be mesmerised with his aura. A light is extinguished. Fidel Castro. RIP
Vivek Agnihotri: RIP. Fidel Castro, a comrade of Indian Naxals, Maoists, insurgents, red terrorists, communists, liberals congress & some ex prime ministers.
Ayushmann Khurrana: RIP Fidel Castro.