| Santhosh K. Nayar | |
| Birth Name: | Santhosh Kesavan Nayar |
| Birth Place: | Thiruvananthapuram, India |
| Occupation: | Actor |
| Years Active: | 1982–present |
| Spouse: | Subhasree V. |
| Children: | 1 |
Santhosh Kesavan Nayar is an Indian actor who appears in Malayalam cinema. He has acted in more than 100 films as villain, hero, second hero and as comedian as well.
Santhosh hails is from Thiruvananthapuram, India.[1] He is the only son of retired headmaster C. N. Kesavan Nair and P. Rajalakshmiamma, who is also a retired teacher. He grew up along with his two sisters in Pettah, Thiruvananthapuram. Santhosh was brought up by his maternal grandparents, advocate K. S. Chellappan Pillai and B. Parukuttyamma, ever since his parents left to Ethiopia on deputation. He did his schooling at St. Joseph's Higher Secondary School, Thiruvananthapuram. Both his sisters turned out to be gynaecologists while he wanted to pursue a career as an actor. He graduated and post graduated in mathematics from Mahatma Gandhi College, Thiruvananthapuram. He was active in politics during his college days.
He made his debut through Malayalam movie Ithu Njangalude Katha directed by P. G. Viswambharan in 1982.
He married Subhasree V., a high-school teacher by profession; they have a daughter, Rajasree S. Nayar.