Your vote on this answer has already been received
Many Malayali people contributed to the country's art and culture, I list some below.
J.J.Yesudas - Music
Mammooty and Prem Nazir, Mohanlal - Movie
Raja Ravi Varma - Paintings
Karunakaran, Namboodripad - Politics
K. R. Narayanan - Former President of India.
V.K. Krishna Menon (Orator and was India's Defence Minister)
Vakkom Majeed,Sir Chettur Sankaran Nair,C. Kesavan
U. Gopala Menon
Sir C Madhavan Nair
K. Kelappan (Known as Kerala Gandhi), K. P. Kesava Menon .
A. V. Kuttimalu Amma,NP Nayar Kallat Krishnan
M. Kanaran, C.H. Kanaran
Lakshmi Sehgal (As Captain Lakshmi, commanded the Jhansi Rani Regiment of the INA under Netaji Subhash Chandra Bose )