Son of Thevar)[a] is a 1992 Indian Tamil-language drama film directed by Bharathan, and written and produced by Kamal Haasan.

It stars Sivaji Ganesan, Haasan, Revathi, Gautami and Nassar; with Kallapart Natarajan, Kaka Radhakrishnan, Sangili Murugan and Vadivelu in supporting roles.

The script of Thevar Magan was completed in seven days; it was written using screenwriting software called Movie Magic.

Thevar Magan was released on 25 October 1992 – Diwali day; it received critical acclaim and completed a 175-day run at the box office.

It was later remade in Hindi as Virasat (1997) and in Kannada as Thandege Thakka Maga (2006) and as Pakistani Punjabi Jageer (2004)

Sakthivel returns home to his landlord father Periyasamy Thevar's village in rural Theni after completing his education in London.

To his father's annoyance, he brings with him his westernised girlfriend Bhanumathi, hailing from Andhra Pradesh, to meet his family.

Sakthi announces his plan to open a chain of restaurants in Madras & marry Banumathi, which saddens his father as he wanted his son to help local residents with his education.

To prevent further escalation of the situation, Sakthi, with his father's permission and with the help of his I.A.S friends in the government, legally opens the temple for all.

Slighted by this, Mayan hires goons to break a dam protecting a part of the village that supports Periya thevar.

The goons use explosives to damage the dam, flooding half of the village and resulting in numerous deaths, including infants.

Weeks later, Mayan uses his clout to force a poor villager to close a portion of his land, preventing the public from easily reaching the main road.

Although understanding and willing, Paramasivam is Mayan's maternal uncle and is afraid of his nephew's backlash, especially because he has a daughter named Panchavarnam.

While Sakthi and Panchavaranam are returning from dropping off Banu at the station, a drive by attempt is made on their life, which they narrowly escape.

Few weeks later, the HR&CE department plans the long pending temple celebrations and problem rises about the first respect.

[8] Haasan later wrote a script, which eventually became Thevar Magan, in seven days, although he said he was challenged to write it in twelve.

[12] According to Haasan, Thevar Magan is the first film that was written using a screenwriting software called "Movie Magic".

[9] In portraying Sakthi, Haasan wore colourful, buttoned-up shirts and jeans, and a medium-size beard and a mullet in the first half of the film.

[17] The unit had originally wanted to cast either Vijayakumar or S. S. Rajendran for the character Periya Thevar but Haasan approached Sivaji Ganesan, who completed his scenes within seven days.

[20] Meena was approached to play the character Panchavarnam; she acted for a few days but due to date issues, she was replaced by Revathi.

There was a scene where the bund has been breached by some people and in order to have a "wet, messy look", Sreeram and crew for six days had to "water the place before every shot".

[35] Baradwaj Rangan said Haasan's screenplay "uses small gestures to say a lot between the lines, without explaining everything in tiresome detail", and that Bhanu is frequently shown boarding and alighting from trains, establishing her status as an outsider.

[49] The film became controversial for identifying the Thevar community with glorified violence,[50][51] and faced competition from other Diwali releases Pandian, Rasukutty, Senthamizh Paattu,[52] Kaviya Thalaivan, Thirumathi Palanisamy, Thai Mozhi and Mangala Nayagan.

[58] On 25 October 1992, The Indian Express said; "The formidable combination of Kamal Haasan and Sivaji Ganesan, the directorial talent of Bharathan, excellent cinematography of P. C. Sriram and music by the maestro [Ilaiyaraaja], have all gone into producing Thevar Magan".

[60] K. Vijiyan of New Sunday Times wrote "Devar Magan proved a satisfying experience at the cinema and well worth the wait".

[5] C. R. K. of Kalki praised the film for perfectly concentrating on character design, natural dialogues and the screenplay that carries these elements.

[61] Thevar Magan was chosen as India's entry for the Best Foreign Language Film for the 65th Academy Awards but was not nominated.

[83] Directors N. Lingusamy,[84] Mysskin,[85] Gautham Vasudev Menon,[86] and S. J. Suryah called Thevar Magan one of their favourite films.

[17] Silverscreen in its review of Vetrivel (2016) called the film "pretty much an unsophisticated copy of Thevar Magan".

[91] Rediff listed the same song alongside "Madhavi Pon Mayilaal" from Iru Malargal (1967) and "Andha Naal Gnabagam" from Uyarndha Manithan (1968).