Shivdasani was selected as the Farex baby (Baby food brand) at age 14 months and from that point on he appeared in many TV commercials. He made his Bollywood debut as a child actor in Mr. India (1987), then appearing in films such as Awwal Number, Shahenshah, ChaalBaaz and Insaniyat. He also played the child role for Inspector Vijaykumar Srivastav in the 1988 film 'Shahenshah', who would later be played by Amitabh Bachchan for the remainder of the film.

Aftab Shivdasani is an Indian film actor, Producer and model known for his works in Bollywood. He started his acting career as a child Artist with the film Mr. India. In 1999, he starred in Ram Gopal Varma's Mast, for which he received the Zee Cine Award for Best Male Debut. In 2000, he appeared in Vikram Bhatt's Kasoor alongside Lisa Ray, for which he received Zee Cine Award for Best Actor in a Negative Role..

Shivdasani continued appearing in commercials till the age of 19 when he was offered a lead role in Director Ram Gopal Varma's Mast opposite Urmila Matondkar while still studying at H.R. College. Shivdasani made his debut as an adult opposite Matondkar in Mast. The film became an instant hit. In 2000, Shivdasani won the Zee Cine Award for Best Male Debut and the Star Screen Award for Most Promising Newcomer – Male for his performance in Mast. He earned critical acclaim for his performance. Mohammad Ali Ikram of Planet Bollywood praised his performance and wrote: "Newcomer Aftab Shivdasani comes across as a bit young and aimless when the movie opens, but as you watch the proceedings, you'll learn that this bit of casting makes perfect sense considering Kittu's immaturity and innocence."

In 2001, Shivdasani made his comeback to acting with his second film, Vikram Bhatt’s Kasoor opposite the debutant Lisa Ray. Shivdasani played a negative role and shot to instant fame with his portrayal of Shekhar Saxena, a well-known Journalist, who murders his wife. His performance in the film earned him a nomination for the Filmfare Best Villain Award and a Zee Cine Award for Best Actor in a Negative Role. Taran Adarsh of Bollywood Hungama noticed the improvement in his acting and praised his performance. "Aftab, as the suave publishing magnate, catches you unaware with a performance that is first-rate. His characterisation is dissimilar from the one he played in his debut-making venture Mast. His work should catapult him to the league of genteel artists." His next release of that year saw him paired with Ram Gopal Varma again after Mast in Love Ke Liye Kuch Bhi Karega, in which Shivdasani starred in a supporting role opposite Saif Ali Khan, Fardeen Khan, Twinkle Khanna and Sonali Bendre. Shivdasani's performance was applauded by Taran Adarsh and considered to be better than the other two heroes. Taran Adarsh wrote "Aftab plays to the gallery and gives a good account of himself. Aftab has an edge over the other two heroes because his character is mass appealing. His scenes with Johny Lever are simply superb." However, the film failed at the box office. His last release of the year was Rajiv Rai's Pyaar Ishq Aur Mohabbat, in which Shivdasani played Taj Bharadwaj, one of the three lead roles with the debutant Arjun Rampal and Suniel Shetty opposite Kirti Reddy. Shivdasani was praised by Taran Adarsh. "Aftab Shivdasani has an edge thanks to his lovable characterization. He is natural." Pankaj Shukla of SmasHits wrote "Aftab is impressive as usual and is fast maturing as an actor."

In 2002, Shivdasani's first two films Koi Mere Dil Se Poochhe opposite debutant Esha Deol and Kya Yehi Pyaar Hai opposite Ameesha Patel were failures at the box office. His third release of that year was Rajkumar Kohli's multi-starrer supernatural horror Jaani Dushman: Ek Anokhi Kahani that was his third consecutive flop. His fourth film of 2002 was the multi-starrer action comedy Awara Paagal Deewana, that proved to be a successful movie and became the seventh highest grosser movie of that year. It was his only hit movie of 2002. His final release of that year was Pyaasa.

Shivdasani had some success in 2003 with the multi-starrer Darna Mana Hai, which was a critical success. His role of Purab, a young college student who has the ability to stop and move people, was critically praised. His next release was Priyadarshan's comedy film Hungama opposite Akshaye Khanna and the debutant Rimi Sen, which was his second success of that year. His third and final release of that year was Footpath opposite Bipasha Basu, Rahul Dev and debutant Emraan Hashmi, which failed to do well at the box office.

Shivdasani's first two releases of 2004 were Suno Sasurjee opposite Ameesha Patel, and Muskaan opposite Gracy Singh. His third release of that year was Indra Kumar's comedy film Masti, in which he starred opposite Vivek Oberoi, Ritesh Deshmukh, Amrita Rao, Genelia D'Souza, Tara Sharma, Lara Dutta and Ajay Devgan. The film became a semi-hit. His last release of that year was Shukriya: Till Death Do Us Apart opposite Anupam Kher and Shriya Saran.

In 2005, Shivdasani's films included Mr Ya Miss opposite Antara Mali and Koi Aap Sa opposite Natassha

In 2009, Shivdasani acted in Aao Wish Karein, the first film produced under his production company, Rising Sun Entertainment. He helped co-write the script and also played the lead character, Mickey. The same year, Shivdasani appeared in Acid Factory. In 2011, Shivdasani played the lead role in the comedy film Bin Bulaye Baraati opposite Priyanka Kothari. Shivdasani's next release was 2012 super-hit 1920: The Evil Returns in which he played the lead role opposite Twinkle Bajpai. His next film Grand Masti, a sequel to the 2004 blockbuster Masti was also a huge success like the original grossing over 100crores at the box office. In January 2016 part 3 of the hit franchise Kyaa Kool Hain Hum was released where Aftab starred alongside Tusshar Kapoor the film was a hit at the box office. In July 2016 the third instalment of the super hit Masti series released.

Shivdasani was born in Mumbai to Prem and Putli Shivdasani. His father is a Hindu Sindhi while his mother is a Parsi. /> He studied at St. Xavier's High School, (Fort) located at Lokamanya Tilak Marg in Mumbai. He then graduated from H. R.College of Commerce in Mumbai. In 2012, he was engaged to Nin Dusanj, a London-based Punjabi who grew up in London and later moved to Hong Kong, working within the advertising and luxury branding industries in Asia. On 5th June 2014, he married Nin Dusanj at a private ceremony attended only by both their families.