Devan averages 6.95 across 28 rated films as an actor, ahead of Mammootty at 6.94.
Dot size shows IMDb votes. Films with fewer than 1,000 votes sit on the baseline.
| New Delhi | 1987 | 7.8 | as G. Krishnamoorthy | as Shankar |
| A Northern Story of Valor | 1989 | 8.7 | as Chanthu Chekavar | as Unikonar |
| Jagratha | 1989 | 7.5 | as Sethurama Iyer | as Vishwam |
| Nair Saab | 1989 | · | as Major Ravindran Nair | as Kumar |
| Ee Thanutha Veluppan Kalathu | 1990 | · | as SP Haridas Damodaran IPS | as Rosario Fernandes |
| Iyer the Great | 1990 | · | as Soorya Narayana Iyer | as Gabria |
| Sainyam | 1994 | · | as Gp Capt A.J. Eashwar | Actor |
| The King | 1995 | 7.6 | as Joseph Alex | as Shankar |
| Arayannangalude Veedu | 2000 | · | as Ravindranath Menon | as Rajendranath Menon |
| Thuruppu Gulan | 2006 | · | as Gulan | Actor |
| Nasrani | 2007 | · | as David John Kottaram | as Thampan Joseph |
| Parunthu | 2008 | · | as Parunthu purushu | Actor |
| The King and the Commissioner | 2012 | · | as Thevalliparambil Joseph Alex | as I. G. Shankar Ramadas the Deputy Director of the N. I. D. |
 L&O Law and Order | 2026 | 6.6 | as Karikkamuri Shanmughan | Actor |
