The film stars Akshay Kumar, Katrina Kaif, Om Puri, Ranvir Shorey, Neha Dhupia, Javed Jaffrey, Sonu Sood, and Sudhanshu Pandey.

The film marked the fourth collaboration of Kumar and Kaif after Humko Deewana Kar Gaye (2006), Namastey London (2007) and Welcome (2007).

The spelling of the word "king" in the film's title with an additional letter "n" was based on advice provided by a numerologist.

Moreover, at the 54th Filmfare Awards, the film won Best Female Playback Singer (Shreya Ghoshal for "Teri Ore"), in addition to a nomination for Best Actor (Kumar).

Puneet eventually learns Happy's true identity as the Kinng of the underworld and shares this revelation with Sonia.

On the day of Sonia and Puneet's wedding, a confrontation ensues when Happy and his associates crash the event and fight Mika’s goons.

As the confrontation escalates, Mika, equipped with special glasses and a hearing aid, prepares to shoot Happy, but Lucky intervenes.

The film concludes with Happy and Sonia's wedding and the gang members returning to their village, where they find peace and redemption.

According to the Indian trade website Box Office India, with around 1,800,000 units sold, this film's soundtrack album was the year's third highest-selling.

Taran Adarsh of Bollywood Hungama gave the film 4 out of 5 stars, and stated "Singh Is Kinng lives up to the hype and hoopla.

The second half does get cluttered, clumsy and loose with loads of wasted talent in the likes of Ranvir Shorey, Javed Jaffrey and a side-lined Om Puri.

[12] Lisa Tsering of Hollywood Reporter stated, "Singh Is Kinng is a rollicking late-night party you don't want to end - with a friendly, funny and generous host; gorgeous women; pumped-up bhangra music and an extravagant, booze-soaked scuffle or two.

"[13] Shubhra Gupta of The Indian Express stated, "Whatever else it notches up, 'Singh Is Kinng' will always and forever be known as the first Hindi film in Punjabi : everyone talks as if sarson da saag is coming out of their mouths.

[15] Janak of Cinema Online Malaysia gave the film 5 out of 5 stars, and stated "Singh Is Kinng is a fantastic five-star movie with wonderful casts and beautiful songs.

"[18] R. Paul Dhillon of Georgia Straight stated, "The filmmakers seem interested only in manipulating the audience, with absolutely no regard for plot, characters, or believability.