"Sorry, India tried to broker peace via actors, films, sports etc with Pakistan but they just want hatred, so be it! Taali do haath se bajti hai," Kapoor tweeted.
Randeep, who had played the role of Sarabjit Singh in the biopic, slammed the decision saying it is reminiscent of the Sarabjit's plight.
"No trial, no evidence, only a closed military court proceeding. It reeks of lies... Pakistan is making another Sarbjit.
"My heart goes out to him... The unimaginable torture to confess and total human rights violation that happen in Pakistan. I have immense faith in the strong leadership of our country... May be we should break him out," he tweeted.
Singer Abhijeet Bhattacharya also condemned the decision.
Pakistan's army chief General Qamar Javed Bajwa yesterday approved the execution of Jadhav, 46, after a military court found him guilty of "involvement in espionage and sabotage activities" against the country.