Donald Meltzer (1922 - 2004) was a psychoanalyst of American origin.

After studying medicine in New York, he trained and settled in London in 1954 to work with Melanie Klein. He taught for more than 20 years at Tavistock Clinic. He worked closely with Wilfred Bion, Roger Money-Kyrle, Esther Bick and Martha Harris (his wife).

He is famous for his work on autism, and often cited as a complementary reference to the work of Frances Tustin and Melanie Klein. Start the notion of claustrum, and that of intrusive identification (instead of projective identification).