Norman Orentreich (; December 26, 1922 – January 23, 2019) was a New York dermatologist and the father of modern hair transplantation.
Orentreich created Estee Lauder Companies' Clinique line of skin care products, invented a number of dermatologic procedures and was the first president of the American Society for Dermatologic Surgery.
He is the founder of the Orentreich Medical Group and the Orentreich Foundation for the Advancement of Science, and the co-director of the latter organization.