Mamitha Baiju is an Indian actress working primarily in Malayalam Cinema, in addition to Tamil Cinema.

She made her debut in 2017 through Sarvopari Palakkaran.

Her role as Reenu in her last malayalam release Premalu (2024) became her breakout role which ranks as the sixth highest-grossing Malayalam film of all time and the fourth highest-grossing Malayalam film of 2024.

Mamitha Baiju hails from Kidangoor in Kottayam district of Kerala.

She was pursuing B. Sc in Psychology from the Sacred Heart College in Kochi but later dropped out during her 3rd year due to attendance shortage.