Donald Meltzer (1922–2004) was an American-born psychoanalyst who trained in London with Melanie Klein and became one of the leading figures of post-Kleinian psychoanalysis. A child psychiatrist by training, he came to London in 1954 and was analysed by Klein until her death. He qualified at the British Psychoanalytical Society, became one of its training analysts and taught for many years at the Tavistock Clinic. He withdrew from the Society in the early 1980s and practised privately in Oxford until his death. With his wife Martha Harris he taught across Europe and South America, and the two founded the Roland Harris Educational Trust, whose Clunie Press published most of his books.
His writing moves from the method of child analysis to a model of the mind built on Klein, Wilfred Bion and Esther Bick. The Psycho-Analytical Process1 (1967) set out the natural history of an analysis. Sexual States of Mind2 (1973) recast Freud's theory of sexuality in terms of internal object relations. Explorations in Autism3 (1975) described dismantling, gave Bick's adhesive identification its first appearance in print and proposed a theory of the dimensionality of mental functioning. The Kleinian Development4 (1978) traced a line of development from Freud through Klein to Bion. His later books placed aesthetic conflict at the start of mental life and mapped the claustrum that intrusive identification creates inside the internal mother.