Tamaki Saito (?? ?, Saito Tamaki, born September 24, 1961) is a Japanese psychologist and critic.
He specializes in the psychiatry of Puberty and Adolescence.
Saito is Director of Medical Service at Sofukai Sasaki Hospital in Funabashi, Chiba.Saito is notable for his study of hikikomori, a term he coined; he is internationally recognized as Japan's leading hikikomori expert.