Awards and Nominations
The film received many awards at several award functions. Ajay Devgn and Prachi Desai received accolades for their nominations, while other awards were won for the film's music, playback and technical direction.
- 56th Filmfare Awards
Nominated
- Best Actor – Ajay Devgn
- Best Supporting Actor – Emraan Hashmi
- Best Supporting Actress – Prachi Desai
- Best Music Director – Pritam
- Best Male PlayBack Singer – Mohit Chauhan for the Song 'Pee Loon
- BIG Star Entertainment Awards
Nominated
- BIG Star Most Entertaining Film Actor – Male – Ajay Devgn
- BIG Star Most Entertaining Director – Milan Luthria
- BIG Star Most Entertaining Film – Ekta Kapoor
- BIG Star Most Entertaining Song – Pee Loon
- BIG Star Most Entertaining Singer (Male) – Mohit Chauhan for Pee Loon
- BIG Star Most Entertaining Singer (Female) – Tulsi Kumar for Tum Jo Aaye
- 2011 Star Screen Awards
Won
- Star Screen Award for Best Popular Music – Pritam
- Stardust Awards
Won
- Stardust Award for Best Thriller – Action Film – Ekta Kapoor
- Stardust Award for Best Thriller – Action Actor – Ajay Devgn
- Best Actress in an Ensemble Cast – Prachi Desai
Nominated
- Stardust Award for Best Thriller – Action Director – Milan Luthria
- Stardust Award for Best Thriller – Action Actress – Kangana Ranaut
- Stardust Award for Dream Director – Milan Luthria
- Stardust Award for Star of the Year – Male – Ajay Devgn
- Best Actor in an Ensemble Cast – Emraan Hashmi
- Lions Gold Awards 2010
Won
- Lions Favorite Popular Actor(Male) – Ajay Devgn
- Lions Favorite Actor in Supporting Role – Randeep Hooda
- Lions Favorite Actress in Supporting Role – Prachi Desai
- 6th Apsara Film & Television Producers Guild Awards
Won
- Apsara Award for Best Screenplay – Rajat Arora
- Apsara Award for Best Actress in a Supporting Role – Prachi Desai
Nominated
- Apsara Award for Best Film – Balaji Motion Pictures
- Apsara Award for Best Actor – Ajay Devgn
- Apsara Award for Best Director – Milan Luthria
- Apsara Award for Best Dialogue – Rajat Arora
- Apsara Award for Best Choreography – Raju Khan for "Parda Parda"
- Apsara Award for Best Lyrics – Irshad Kamil for "Pee Loon"
- Apsara Award for Best Music – Pritam
- Apsara Award for Best Playback Singer (Male) – Mohit Chauhan for "Pee Loon"
- Apsara Award for Best Playback Singer (Female) – Tulsi Kumar for "Tum Jo Aaye"
- Apsara Award for Best Performance in a Negative Role – Emraan Hashmi
- Apsara Award for Best Actor in a Supporting Role (Male) – Emraan Hashmi
- 2011 Zee Cine Awards
Won
- Zee Cine Award for Best Actor in a Supporting Role - Female – Prachi Desai
- Zee Cine Award for Best Playback Singer - Male – Mohit Chauhan for "Pee Loon"
- Zee Cine Award for Best Dialogue – Rajat Arora
Nominated
- Best Actor – Male – Ajay Devgn
- Best Film – Balaji Motion Pictures
- Best Director – Milan Luthria
- Sa Re Ga Ma Pa Song of the Year – "Pee Loon"
- Best Music Director – Pritam
- Best Playback Singer – Female – Tulsi Kumar for "Tum Jo Aaye"
- Best Lyricist – Irshad Kamil for "Pee Loon" and "Tum Jo Aaye"
- Best Supporting Actor – Emraan Hashmi
- Best Supporting Actress – Kangna Ranaut and Prachi Desai(won)
- Best Story – Rajat Arora
- Best Cinematography – Aseem Mishra
- Best Editing – Akiv Ali
- Global Indian Music Awards,2011
Won
- Best Music Arranger & Programmer – Sandeep Shirodkar for the Song Pee Loon
- Best Lyricist – Irshad Kamil for the Song Pee Loon
- Best PlayBack Singer(Male) – Mohit Chauhan for the Song Pee Loon
- Best Song of The Year – Pee Loon
- MTV Hot Pick of The Year – Tum Jo Aaye
- International Indian Film Academy Awards 2011
Won
- Best Supporting Actress – Prachi Desai
- Global Indian Film and Television Honours 2011
Won
- Best Actor in a Lead Role(Male) – Ajay Devgn
- Best Playback Singer(Male) – Mohit Chauhan for the song Pee Loon
- Best Re-Recording – Ajay Kumar
- Best Dialogues – Rajat Aroraa
- Best Art-Direction – Nitin Chandrakant Desai
- Best Costume-Designer – Rushi Sharma & Manoshi Nath
Read more about this topic: Once Upon A Time In Mumbaai