Genelia D'Souza was signed for the film but opted out.

Ravi B & Rakesh Yankaran song "Monday" was a cover version of "Chalao Naino Se."

Rohit Shetty directed Ajay Devgan and Abhisheik Bachchan together after 9 years. They both were part of his first film "Zameen" (2003).

The film is inspired from 1979 Hrishikesh Mukherjee's classic Goolmaal staring Amol Palekar and Utpal Dutt with Bindiya Goswami.

At 1:15 in the song "Bol Bachchan" from the movie Bol Bachchan, the music was inspired from 2:23 of the song "Rock And Roll Bol Baby Bol from the movie Mere Jung. The original source was the song Ballroom Blitz by Sweet.

Amitabh Bachchan created his act from Amar Akbar Anthony 1977 for the title song of the film where he had to come out off an huge egg.

On Dussehra 2011, director Rohit Shetty who previously directed the comedy flick, Golmaal 3 (2010), did first give actor Ajay Devgn an offer for Golmaal 4, but Devgn claimed "Golmaal 4 will happen next to next year. It's necessary to have two years gap between two Golmaal films. It's not good if it comes every year." After the announcement, it was added that Bol Bachchan will be made before Golmaal 4.

Bipasha Basu was replaced by Asin.

Abhishek Bachchan was quite appreciated for his performance and also won awards in the comedian category.

The films title is Bol Bachchan is related to the Bachchan family where there is a saying in India Bol Bachchan Amitabh Bachchan.

For the first time Rohit Shetty worked with Amitabh Bachchan.

In both the movies, remake and original i.e. Golmaal (1979) & Bol Bachchan, Amitabh Bachchan makes a cameo.

Movie is shot at Nahargarh fort.

Chomu Palace is a renowned palace in Jaipur, Rajasthan where famous Bollywood movies Bol Bachchan is shot

Abhishek Bachchan was injured during a fight scene in Jodhpur.

Ajay's dialogue "I can talk english..." is clearly inspired from the 1982 Comedy classic: Namak Halaal where Amitabh Bachchan says the same dialogue. Amitabh Bachchan also makes a good entry in the introduction.