Anthony Kaun Hai? (transl. 'Who is Anthony?') is a 2006 Indian Hindi-language mystery thriller film directed by Raj Kaushal and produced by Nikhil Panchamiya. It stars Sanjay Dutt, Arshad Warsi, Minissha Lamba and Raghuvir Yadav.^[3] It is a remake of the 2002 film Who Is Cletis Tout? starring Christian Slater.^[4][5]

The film is set in Bangkok, Thailand. It starts with Master Madan, an underworld killer performing a mission to claim the debt from someone, and taking Anthony Gonsalves as hostage. Master threatens the debtor to kill Anthony if he doesn't repay the debt in two hours. However, the man claims he is not the Anthony Gonsalves he's looking for, and tells him a story to clarify.

Gonsalves says his real name is Champak Chaudhary, alias Champ. He made a living by forging passports, ID cards, and all other legal documents. He was in love with Roza, who agrees to marry him. Champ is arrested and sentenced to six months in jail during their wedding.

In jail, Champ meet Raghu, who is serving his life sentence for stealing diamonds from Thai Queen. Raghu is a magician and used his magic tricks to steal the Queen's diamonds; he did it for his daughter Jia, and he buried the stolen diamonds before he was arrested. Raghu appears to be deaf and dumb in jail. Champ is the first one to find Raghu is neither deaf nor dumb as he talks with Champ. Raghu speaks to Champ because he wants Champ's help to get out of jail, as the former learns his wife is dead, and his daughter Jia is now alone. He offers half of his diamonds, worth 100 million THB, in exchange for Champ's help to get him out of jail.

Champ refuses Raghu's offer at first because he doesn't want to make trouble for himself as he will finish his service in jail very soon. However, after Champ is released, he finds Roza is married to another guy and pregnant with that man's baby. Upset Champ agrees now with Raghu's offer, and gets him out of jail with a forged Release Notice.

The real Anthony Gonsalves is, however, a journalist who is eager to find some big scandal. He once spots the scene that a powerful man Luck Sharma murdering a girl and shoots it with his camera. He sends the CD of the video that Lucky murdering the girl to Lucky to blackmail him for 10 million THB. Lucky Sharma killed him in return.

Released, Champ and Raghu get their new identities from Champ's friend Dr. Lashwani. However, the new identity Champ gets is Anthony Gonsalves, because Lashwani was just conducting an autopsy for real Gonsalves's dead body when Champ asked his help to get a new identity, and he came up with the name. Champ and Raghu meet Jia later.

After Champ is using Gonsalves's identity, Lucky's man is also shocked to know that Gonsalves is still alive, so they plan to kill him again, but Champ, who they think is Gonsalves, escapes, and Raghu dies in the shooting.

Learning her father owes 50 million THB to Champ for getting him out of jail, Jia shows Champ the place where her father buried the diamonds, which is now inside a jailyard. Champ falls in love with Jia, and he soon learns who is real Anthony Gonsalves and his story of him, so he reports to the police and asks to be locked in jail as witness protection. In the jail, Champ digs out the diamonds and sends them one by one to Jia through a pigeon.

Champ later gives the CD to inspector Suraj Singh and Lucky Sharma is therefore arrested.

After listening to Champ's full story, Master Madan supports him. He shoots Lucky Sharma's men who come to kill Champ. Also, he lends his ferrari to Champ for catching the flight that Jia is supposed to fly with. Champ sees Jia at the airport before she boards the flight, and they confess their love to each other and reunite.

• Sanjay Dutt as Master Madan
• Arshad Warsi as Champak "Champ" Choudhary / Anthony Gonsalves
• Minissha Lamba as Jia Sharma
• Raghuvir Yadav as Raghuveer Sharma, Jia’s father
• Anusha Dhandekar as Rosa
• Gulshan Grover as Inspector Suraj Singh
• Ravi Baswani as Dr. Lashwani
• Anupam Shyam as Pappu
• Rajesh Tiwari as Pappu's Henchman
• Himesh Reshammiya as himself - Special Appearance

Taran Adarsh of IndiaFM gave the film 2.5 out of 5, writing, ″On the whole, ANTHONY KAUN HAI? is a decent fare that would appeal to the elite more than the commoners.″^[6]