| Year | Movie Title | Key Cast | Notable Feature | | :--- | :--- | :--- | :--- | | 1997 | Arunachalam | Rajinikanth | Features a famous "mirror ghost" sequence in a comedic setup. | | 1999 | Nilave Mugam Kaattu | Parthiban | Psychological horror about an imaginary friend turning malevolent. | | 2000 | Thenali | Kamal Haasan | Psycho-thriller/horror directed by K. S. Ravikumar (borderline old/transition). |

This report provides a curated list and contextual analysis of old Tamil horror movies produced primarily before the year 2000. Unlike modern horror, which relies heavily on visual effects (VFX) and jump scares, old Tamil horror cinema is notable for its reliance on atmospheric storytelling, folklore, melodrama, and socio-moral allegories. This document categorizes these films based on thematic elements and historical significance.

| Year | Movie Title | Key Cast | Notable Feature | | :--- | :--- | :--- | :--- | | 1988 | Poonthotta Kaavalkaaran | Ramarajan | Horror-comedy; village deity fights a sorcerer. | | 1993 | Uthama Raasa | Rajinikanth | Demon god themes; extensive use of folk drums for tension. | | 1996 | Mahaprabhu | Sarath Kumar | Possession by an ancient spirit. |

The following list is divided by thematic categories for easy reference.

Films dealing with split personalities and palace ghosts, leading to the 2005 blockbuster Chandramukhi .

Pre-cursor to modern horror, targeting youth audiences.

| Year | Movie Title | Key Cast | Notable Feature | | :--- | :--- | :--- | :--- | | 1964 | Karnan | Sivaji Ganesan | While mythological, the forest/ocean scenes set horror tropes. | | 1965 | Yarukkaga Azhudhan | Muthuraman | Early psychological thriller with ghost undertones. | | 1977 | Annakili | Sivakumar | Rural horror; introduced the concept of a benevolent village spirit. | | 1982 | Moondru Mugam | Rajinikanth | Action-horror; iconic villainous possession sequences. |