Lalitha Lenin (born 17 July 1946, in Thrithalloor, Thrissur, Kerala) is an Indian poet in Malayalam.
K. K. Lalitha Bai (her official name) was also the Head of the Department of Library and Information Science, University of Kerala, Thiruvananthapuram.
In addition, she was a member in the Senate and Academic Council of the University of Kerala, General Council of Kerala Sahitya Academy, Jansikshan Sansthan Management Board, Governing Body of the State Institute of Children's Literature, State Resource Centre, Kerala State Core Group on Continuing Education.
Ranganathan Gold Medal for securing first Rank in Master of Library Science Degree Examination from the University of Mysore in 1976.
She joined as Assistant Librarian at Kerala Forest Research Institute, Peechi, Thrissur in 1977.