
Shakti Kapoor was born in Delhi, India to a Punjabi family. His father ran a tailor shop in Connaught Place, New Delhi. After a long struggle, Shakti Kapoor was spotted by superstar Sunil Dutt whilst he was making "Rocky" to launch his son Sanjay. He was then cast as the antagonist in the movie. But Sunil Dutt felt that his name "Sunil Sikanderlal Kapoor" wouldn't do justice to his villainous stint and hence, "Shakti Kapoor" was born.

Shakti Kapoor's portrayal of RD earned him praises and made him a name to be sought out for.

As a struggler in Bollywood, initially Shakti Kapoor did many inconsequential roles in movies, all the while looking out for a suitable role as a leading man. The years 1980–81 established Shakti Kapoor as an actor in Bollywood with two of his movies Qurbani and Rocky. In 1983, Kapoor had roles in Himmatwala and the Subhash Ghai directed movie Hero. Kapoor had played villain roles in both these movies. In the nineties, he often diversified to positive comic roles and performed them with equal finesse. He has been nominated for the Filmfare Award in the Best Comedian category and won once, for his performance as Nandu in David Dhawan's film, Raja Babu. Some of his comic roles have been as Inspector Bhinde in Insaaf, Prasad in Baap Numbri Beta Dus Numbri, Crime Master Gogo in Andaz Apna Apna, Tohfa, as Batuknath in ChaalBaaz and as Goonga in Bol Radha Bol.
Kapoor has been a reference for mimicry artistes who emulate his style and dialogues such as "Aaaooo Lolita" from the movie Tohfa, "Main Nanha sa Chotta sa Bachcha Hoon" from the movie Chaalbaaz and "Nandu sabka bandhu, samajhta nahi hai yaar" from the movie Raja Babu. Since 2000, Kapoor is a regular fixture in Priyadarshan films like Hungama, Hulchul, Chup Chup Ke, Malamaal Weekly and the Malayalam remake Bhagam Bhag. He also acted in a few Bengali films of Kolkata, Odia film and in an Assamese feature film. In 2011, he was in the reality television show Bigg Boss 5 as one of the contestants. He has appeared in the musical comedy Aasman Se Gire Khajoor Pe Atke with his sister-in-law Padmini Kolhapure. He is also the brand ambassador of Servokon.
Shakti Kapoor is married to Shivangi (Padmini Kolhapure's elder sister) and has two children, a son Siddhanth Kapoor and a daughter Shraddha Kapoor. He resides in Juhu, Mumbai.
In March 2005, India TV released a video, allegedly showing Shakti Kapoor asking for sexual favour from an undercover reporter posing as an aspiring actress, in return for entry into the film industry. Where he told the undercover reporter "I want to make love to you....kiss you" According to India TV, this was a sting operation to expose the phenomenon of casting couch prevalent in Bollywood. This incident sparked a controversy in Bollywood and Kapoor was banned by the Film & Television Producers Guild of India. Association of Indian Motion Pictures and TV Programme Producers decided not to ban him as no allegations against him were proved. One week later, however, the Film & Television Producers Guild lifted the ban.
Kapoor claimed that the video clip in question was doctored and he had been framed. He said that the undercover reporter met him several times and threatened to commit suicide if he did not come to the hotel room she had booked.
1995: Filmfare Best Comedian Award – Raja BabuShakti Kapoor was seen as a contestant in the popular controversial Indian reality show Bigg Boss, season 5. He was the captain of the house for the first two weeks but eventually got eliminated in the fourth week of the show.He was also the only male constestant of the show for that season.
As contestant