Moondram Pirai is a 1982 Indian Tamil-language romantic drama film written, directed and filmed by Balu Mahendra. The film features Kamal Haasan and Sridevi in the lead roles, while Silk Smitha, Poornam Vishwanathan and Y. G. Mahendra play supporting roles. The music for the film was composed by Ilaiyaraaja, with lyrics written by Kannadasan, Vairamuthu and Gangai Amaran. It also featured the last song written by Kannadasan to be recorded before his death in 1981.

Moondram Pirai is about a school teacher, R. Srinivas, who rescues a woman, Bhagyalakshmi, who is suffering from retrograde amnesia, from a brothel, and protects her in his house located in Ketti. The rest of the film shows how Bhagyalakshmi recovers her memory with Srinivas' help. Moondram Pirai is based on Balu Mahendra's brief relationship with actress Shoba, who died in 1980, shortly after their marriage. The first film independently produced by G. Thyagarajan and G. Saravanan's Sathya Jyothi Films, it was predominantly shot in Ooty and Ketti, with further shooting also taking place in Bangalore.

Moondram Pirai was released on 19 February 1982 to positive critical reception. It was a box office success and had a theatrical run of 329 days. The film won two National Film Awards: Best Actor for Haasan, and Best Cinematography for Mahendra. It also won the Best Director Award for Mahendra at the Filmfare Awards, and five Tamil Nadu State Film Awards, including Best Film (third prize), Best Actor (Haasan) and Best Actress (Sridevi). The film was dubbed in Telugu under the title Vasantha Kokila. Mahendra remade the film in Hindi as Sadma, with Haasan, Sridevi and Smita reprising their roles from the original version.

The music of the film was composed by Ilaiyaraaja. The soundtrack was released through the record label Agi Music. The number "Kannae Kalaimane", which is based on the Kapi raga, and has shades of the raga Natabhairavi, was written by Kannadasan in "about two minutes" time, after listening to the film's story and the situation for the song. According to his daughter Kalaiselvi, the song was written with his wife in mind. Kannadasan was present at the recording session of the song, which took place in September 1981. It was the last recorded song which Kannadasan wrote before his death in October 1981. "Poongatru" was based on the Sindhu Bhairavi raga.

The soundtrack received positive critical reception. "Ponmeni Uruguthey" that was picturised on Haasan and Smitha developed cult status. Hari Narayan of The Hindu said, "The lullaby "Kanne Kalaimane" sees the tranquillity reach a crescendo." Another critic from The Hindu, Shankar, called "Vaanengum Thanga" a "dream song" On the song, "Kanne Kalaimane", Balu Mahendra said that it "stirs you to this day".

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