C.I.D Moosa is a 2003 Indian Malayalam-language action comedy film directed by Johny Antony, written by Udaykrishna–Sibi K. Thomas duo, and co-produced by Dileep.

It stars Dileep in the title role of a private detective, and features an ensemble cast of Bhavana, Ashish Vidyarthi, Sharat Saxena, Murali, Harisree Ashokan, Cochin Haneefa, Jagathy Sreekumar, Vijayaraghavan, Captain Raju, Oduvil Unnikrishnan, Sukumari, and Salim Kumar.

Meanwhile, a terrorist leader named Khalid "Baba" Muhammed, who is incarcerated in the Tihar Jail, formulates a plot to murder the Kerala Chief Minister Ravi Menon with the help of a shrewd and corrupt Police Commissioner Gowrishankar.

Karamchand willingly leaves his office and tools to his nephew, and Sahadevan adopts the pseudonym CID 'Moosa' (from the first syllables of his first and last names).

In his first assignment, Moosa and his associates take it upon themselves to investigate the attack on the CM, and manage to nab Randheer (who planted the bomb at the hospital) and surrender him over to the police, impressing the DIG Sathyanath (who happens to be Menon's nephew).

However, Gowrishankar secretly kills Randheer to avoid an interrogation, and destroys Moosa's office after learning that the firm doesn't have a license.

Upon hearing what has happened, Baba furiously breaks out of prison as he personally intends to help Gowrishankar, Amar and Jandu in finishing off both Menon and Moosa.

However, Sathyanath learns that the Central government issued a reward of ₹ 5 lakhs for Amar's head which Moosa will receive, much to the commissioner's dismay.

Before leaving, Moosa bids farewell to his family, friends and associates (with even Sathyanath and Pitambaran paying their respects and waving goodbye to him).

As Sahadevan screams in terror, the lunatic commences lift-off, and the jet is last seen veering wildly into the clouds after a series of barrel rolls.

The actor announced that a CID Moosa animation film will soon hit the screens after 17 years since its release.