The 1984 family drama was India's official entry at the Oscars in 1985 in Best Foreign Language Film category.
"'Saaransh' was released on 25th May, 1984. It has completed 30 years in this fabulous film industry. What a journey!," Kher, 59, tweeted.
"'Saaransh' changed my life... My thinking forever. It made me a better person. It not a film but a philosophy for me," he added.
The film also starred Rohini Hattangadi, Madan Jain, Nilu Phule, Suhas Bhalekar and Soni Razdan in pivotal roles.
The actor also tried his luck in Hollywood and starred in 'Silver Linings Playbook' with Robert De Niro.