Maine Gandhi Ko Nahin Mara (I Did Not Kill Gandhi) is a 2005 Indian Hindi-language drama film, directed by Jahnu Barua and produced by Anupam Kher. The film stars Anupam Kher and Urmila Matondkar in lead roles. The film explores the downward spiral of a retired Hindi professor, Uttam Chaudhary, as he falls victim to dementia and believes that he killed Mahatma Gandhi. The film received critical acclaim for its performances and won several awards at national and international film festivals.

The film was released on 30 September 2005 in India and was distributed by Yash Raj Films. The film had a runtime of 100 minutes and was rated U/A by the Central Board of Film Certification. The film had a budget of 3 crore and earned 2.5 crore at the box office, making it a commercial failure. However, the film was praised by audiences and critics for its sensitive portrayal of dementia and its impact on the family.
The film begins with a fire in the room of Uttam Chaudhary, a retired Hindi professor who lives with his daughter Trisha and son Karan in Mumbai. Trisha takes him to a doctor who diagnoses him with dementia and says that nothing can be done. Uttam starts to have flashbacks of his childhood, when he used to play with a toy gun and a dart board with his brother Ronu. One day, he accidentally shoots a balloon filled with red dye on a newspaper photo of Gandhi, which makes his father angry and beat him up. Uttam says "Maine Gandhi Ko Nahin Mara" (I Did Not Kill Gandhi) while his father hits him.
In the present, Uttam becomes obsessed with the idea that he killed Gandhi and that he is being punished for it. He sees his house as a jail and his food as poisoned. He also starts to forget his family members and their names. Trisha tries to comfort him and remind him of his past achievements as a professor and a poet. She also contacts Ronu, who is now a successful lawyer in Delhi, and asks him to come and help Uttam. Ronu agrees and arrives in Mumbai with his wife.
Trisha also meets Dr. Siddharth, a young psychiatrist who specializes in dementia cases. He offers to treat Uttam and tries to make him realize that he did not kill Gandhi. He uses various methods such as showing him historical footage, playing his favorite poem, and eating his food to prove that he is not guilty or poisoned. He also arranges a mock trial in a court, where he acts as Uttam's lawyer and defends him against the charge of killing Gandhi. He calls a gun expert who testifies that a toy gun cannot kill anyone and shows the toy gun that Uttam used as a child. He also calls Trisha as a witness who testifies that Uttam was a loving father and a respected teacher who admired Gandhi.
The trial ends with Uttam being declared innocent by the judge, who is actually Siddharth's father. Uttam breaks down in tears and hugs Siddharth, thanking him for saving him. He also apologizes to Trisha for causing her trouble and tells her that he loves her. He then recites his favorite poem by Sohan Lal Dwivedi, "Koshish Karne Walon Ki Har Nahi Hoti" (Those who have courage never fail). The film ends with Uttam smiling peacefully as he holds Trisha's hand.
The film received positive reviews from critics, who praised the performances of Anupam Kher and Urmila Matondkar, the direction of Jahnu Barua, and the screenplay by Sanjay Chauhan. The film was also appreciated for its realistic depiction of dementia and its social message. The film has a rating of 7.4/10 on IMDb and 80% on Rotten Tomatoes.
The film won several awards at national and international film festivals. Anupam Kher won a Special Jury Award at the National Film Awards and Best Actor awards at the Karachi International Film Festival, the Riverside International Film Festival, and the Palm Springs International Film Festival. Urmila Matondkar won the Best Actress award at the Bollywood Movie Awards. The film also won the Best Film award at the KaraFilm Festival and the Audience Award at the Indian Film Festival of Los Angeles.