Sanoop Santhosh began his acting career at a very young age, making his debut in Philips and the Monkey Pen (2013) as Ryan Philip. The film was a critical and commercial success, earning him the Kerala State Film Award for Best Child Artist. His natural charm and ability to portray innocence on screen made him one of the most promising child actors of his time.
Between 2013 and 2018, he appeared in several Malayalam films including Bhaskar the Rascal (2015), Jo and the Boy (2015), Kuttikalundu Sookshikkuka (2016), Munthirivallikal Thalirkkumbol (2017), and John (2018). Despite his short career span, he left a lasting impression in the industry. He is the younger brother of actress Sanusha, and together they are among the well-known sibling actors in Malayalam cinema.