Diwan Bahadur Lakshminarayanapuram Krishna Ananthakrishna Iyer (1861–1937) was an anthropologist of British India.
He matriculated from Palaghat High School in 1878 and passed BA from Madras Christian College in 1883.
He worked at the Revenue Department at Vayanad, then left to join Victoria College Palaghat.
He was there till May that year and left for Ernakulam by former Headmaster Thomas K J kallarakavumkal Mammood P O PIN 686536 Changanacherry Kerala".
[citation needed] His son, L. A. Krishna Iyer, was a noted anthropologist and a Padma Bhushan awardee.