Armand M. Nicholi Jr. (October 18, 1927 – June 22, 2017) was a clinical professor of psychiatry at Harvard Medical School and the Massachusetts General Hospital. His clinical work and research focused on the impact of absent parents on the emotional development of children and young adults. He was the editor and coauthor of the classic The Harvard Guide to Psychiatry (3rd edition, 1999). He was also a founding board member of the Family Research Council.