Thondimuthalum Driksakshiyum (transl. The mainour and the witness) is a 2017 Indian Malayalam-language crime drama film directed by Dileesh Pothan and written by Sajeev Pazhoor. The film stars Fahadh Faasil, Suraj Venjaramoodu, and Nimisha Sajayan in lead roles, with Alencier Ley Lopez, Vettukili Prakash, and Sibi Thomas in supporting roles. Syam Pushkaran served as a creative director of the film. Bijibal composed the music and Rajeev Ravi handled the cinematography.

Thondimuthalum Driksakshiyum was produced on a budget of ₹65 million. The film was released on 30 June 2017 in Kerala. It was a critical and commercial success, grossing ₹179.3 million at Kerala box office alone The Hindu included the film in their "Top 5 Malayalam movies in 2017" and "The 25 best Malayalam films of the decade".

The film won three National Film Awards, two Kerala State Film Awards, four Filmfare Awards South, three South Indian International Movie Awards, eight Asianet Film Awards, six CPC Cine Awards, four Vanitha Film Awards, three Kerala Film Critics Association Awards, two Asiavision Awards and one award at International Film Festival of Kerala.