|Produced by||Sivashakthi Pandian|
|Sivashakthi Movie Makers|
|Distributed by||Sivashakthi Movie Makers|
|Box office||10 crore (US$1.7 million)|
Kadhal Kottai (Tamil: காதல் கோட்டை) is a 1996 Tamil film directed by Agathiyan, in which Ajith Kumar and Devayani play lead roles, apart from Heera Rajgopal, Thalaivasal Vijay, and Karan who played important roles.
The film was a major blockbuster and also won the National Film Award for Best Feature Film in Tamil, the National Film Award for Best Direction as well as the National Film Award for Best Screenplay for Agathiyan. It garnered positive critical acclaim and completed a 240-day run at the box office. The film was dubbed into Telugu as Prema Lekha and to Kannada as Yaare Neenu Cheluve (1998). Agathiyan also remade the movie in Hindi titled Sirf Tum (1999). The film was released as a novel in 2010 under the same name.
Kamali (Devayani) lives with her sister and brother-in-law in Ooty and is searching for a job. While in Madras, her purse is stolen and she fears she has lost her university certificates. Surya (Ajith Kumar) who works in Jaipur finds the purse and sends it back to her, and a love develops through letters and phone calls. They agree to love each other without meeting, and Surya eventually moves to Madras for work. However Kamali's brother-in-law is pressuring her to marry a suitable man and Surya's boss keeps trying to seduce him. Eventually, Kamali and Surya unite through a run of coincidences.
- Ajith Kumar as Surya
- Devayani as Kamali
- Heera Rajgopal as Neha
- Raja as Jeeva
- Karan as Siva
- Manivannan as Kaliyaperumal
- Thalaivasal Vijay as Paneer
- Rajeev as Sekhar
- Pandu as Ramasamy
- Ramji in a special appearance
- 'O Podu' Rani in the song Vellarikka
Agathiyan had asked Devayani to change her glamorous on screen image for the film, and Devayani duly agreed with the film becoming the start of several other similar roles for her.
|1||Kaalamellam Kadhal||P. Unnikrishnan, K. S. Chithra||Agathiyan||5:05|
|3||Mottu Mottu Malaradha||Swarnalatha||4:54|
|4||Nalam Nalamariya Aval 1||S. P. Balasubrahmanyam, Anuradha Sriram||4:48|
|5||Nalam Nalamariya Aval 2||Krishnaraj, Anuradha Sriram||4:49|
|6||Sivappu Lolakku||S. P. Balasubrahmanyam||Ponniyin Selvan||5:23|
|1998||Yaare Neenu Cheluve||Kannada||V Ravichandran, Sangeetha||D. Rajendra Babu|
|1999||Sirf Tum||Hindi||Sanjay Kapoor, Priya Gill||Agathiyan|
- National Film Awards- 1996
- Best Director: Agathiyan
- Special Prize: Actress: Devayani
- Best Editor: Lachi Mohan
- Best Costume Designer: Maasanam 
- "Kadhal Kottai". cinesouth. Retrieved 2013-10-04.
- "Five years... and still sitting pretty". The Hindu (Chennai, India). 30 August 2008.
- "Kadhal Kottai Songs". raaga. Retrieved 2013-10-04.
- "1996 State Awards". Dinakaran.