Rex Vijayan (born 26 April 1983) is an Indian composer, guitarist, singer, record producer and multi-instrumentalist from Kerala.

He started out his career as a composer in the Malayalam film industry through Kerala Cafe by giving the score to Anwar Rasheed's segment 'Bridge'.

He then did the composing of Chaappa Kurishu directed by Sameer Thahir, 22 Female Kottayam, by Aashiq Abu, helped with the background score of films Second Show and Friday and did music for Shyamaprasad's movie English in which he collaborated with American clarinet player and music composer Shankar Tucker in the song Aakashame featuring Rohan Kymal on vocals.

He then did the title track for Anil Radhakrishnan Menon's debut movie North 24 Kaatham starring Fahadh Faasil.

Rex Vijayan become a playback singer with ‘Enthanu Bhai' in Aashiq Abu's film Da Thadiya.

His work for Sameer Thahir's second movie Neelakasham Pachakadal Chuvanna Bhoomi (after his directorial debut 'Chaappa Kurishu') has set a path breaking trend in Malayalam film music.