Ratheesh (11 September 1954 – 23 December 2002) was an Indian actor best known for his work in Malayalam cinema.

Unlike other villains of the time, Ratheesh captivated the Malayalam movie lovers with his charms and handsome looks.He attained superstardom for a brief while during the 80s.

From 1981 to 1988 he was at the peak of his career, performing in films like Oru Mukham Pala Mukham, Ee Nadu, Rajavinte Makan, Muhoortham 11.30, Sangharsham, Vazhiyorakazhchakal, Aayiram Kannukal, Abkari, Unaroo, Ithraym Kaalam, Uyarangalil, Thanthram, Akkachiyude Kunjuvava, John Jaffer Janardhanan, Innalenkil Nale and Ponthooval.

After a period of four years he made a comeback as the antagonist through Shaji Kailas's Commissioner.

Throughout the 1990s, he did various villainous and character roles in films such as Kashmeeram, Nirnayam, Yuvathurki, 19 April, and Gangothri.