Namitha is the daughter of Pramod, a businessman and Indu, a housewife. She has a younger sister Akhita Pramod. She did her schooling at Carmel Girls Higher Secondary School in Thiruvananthapuram. She was enrolled at the St. Teresa's College to pursue a BA degree in Sociology. She started acting when she was in seventh standard by taking on roles in serials such as Vellankanni Mathav, Amme Devi and Ente Manasa Puthri. She made her debut in films when she acted as Riya, in Rajesh Pillai's critically acclaimed Traffic. In her next film Puthiya Theerangal she played her first lead role, opposite Nivin Pauly. She was not trained in Mohiniyattam and learned the dance steps in Saranya Mohan's dance school in Alappuzha for four days. Both films were successes and she was selected as Top Star (Female) 2013 in Malayalam. In 2014, she was first seen in En Kadhal Pudhithu, her debut Tamil film directed by Maaris Kumar which had a delayed release, followed by Lijin Jose's Law Point. Her last release in 2014 was Ormayundo Ee Mukham. Her recently released Malayalam movie Amar Akbar Anthony where she played a role as a dancer was a blockbuster hit in Malayalam theatres. She has acted in many commercials of Bhima Jewellers, Francis Alukkas and Ripple Tea. She has participated in the popular reality show Ningalkkum Aakaam Kodeeshwaran on Asianet.