|Alma mater||Adayar Film Institute and St.Thomas College Thrissur|
|Years active||2002 - present|
|Spouse(s)||Manju Haridas (2007-present)|
Sunil Kumar, known by his screen-name Narain, is an Indian film actor, who has starred in Malayalam, Tamil and Telugu films. He made his debut in Adoor Gopalakrishnan's Nizhalkuthu (2002), followed by performances in Malayalam films 4 the People (2004), Achuvinte Amma (2005), and Classmates (2006). Narain's Tamil debut was in Mysskin's Chithiram Pesuthadi (2006).
Narain's first film was Nizhalkuthu. His first commercial film, 4 The People, was dubbed in Tamil and Telugu. He portrayed a struggling lawyer, Emmanuel John, in Achuvinte Amma and also played a doctor, Jeevan, in Sheelabathi. He also played roles in Annorikal and Classmates. His debut Tamil movie was Chithiram Pesuthadi. Through Panthaya Kozhi, produced by director Lal, he has been re-launched as an independent action hero in the Malayalam film industry. In 2008, he did another youth-oriented Malayalam movie Minnaminnikoottam. He has acted in more than 20 Malayalam movies.
Narain played the lead role in P. T. Kunju Muhammed's Veeraputhran (2011). He collaborated with director Mysskin in the 2008 film Anjaathe and in the 2012 superhero film Mugamoodi where he portrayed a villain. However his career high came through the 2019, Lokesh Kanagaraj directed venture Kaithi co starring with Karthi Sivakumar . 
Narain completed his pre-degree from St. Thomas College in Thrissur and graduated from Sree Kerala Varma College. On 26 August 2007 he married Malayalam Television host Manju Haridas. Manju had hosted shows like Superstar Junior and has sung in Chithiram Pesuthadi, a Tamil film in which Narain had acted. The couple have a daughter named Tanmayaa.
|2004||4 the People||Rajan Mathew||Malayalam|
|2005||Achuvinte Amma||Adv. Emmanuel John||Malayalam|
|By The People||Rajan Mathew||Malayalam|
|2008||Anjathe||Sathyavan||Tamil||Nominated, Filmfare Award for Best Actor – Tamil|
|Robin Hood||Alexander Felix||Malayalam|
|Veeraputhran||Mohammed Abdul Rahiman||Malayalam|
|Mugamoodi||Anguchamy / Dragon||Tamil||Nominated, SIIMA Award for Best Actor in a Negative Role|
Nominated, Vijay Award for Best Villain
|Ayalum Njanum Thammil||Dr.Vivek||Malayalam|
|The Hit List||Dr. Lewis||Malayalam|
|2013||Kammath & Kammath||Suresh IRS officer||Malayalam|
|3 Dots||Dr. Isaac||Malayalam|
|Aaru Sundarimaarude Katha||Sreekumar||Malayalam|
|2014||Njangalude Veettile Athidhikal||Raj||Malayalam|
|Angane Thanne Nethave Anchettennam Pinnale||Karthika Perumal||Malayalam|
|Kavi Uddheshichathu..?||Vattathil bosco||Malayalam|
|2018||Police Junior||Sai Ram||Malayalam|
|Madhura Raja||SI Balachandran||Malayalam|
Awards and nominations
- 2005Filmfare Awards South-
Best supporting actor -(classmates)
- 2010 Filmfare Awards South - Best Supporting Actor - (Robinhood)
- 2012 - Best Actor in a Negative Role (Mugamoodi)
- "Busy days ahead for Narain". Times of India. Retrieved 8 August 2012.
- "Narain ties the knot". IndiaGlitz. 27 August 2007.
- "Celebs at Dileep, Kavya Madhavan wedding". The Times of India. 25 November 2016.
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