Peace X Peace (pronounced “peace by peace”) is a nonprofit women's organization founded in 2002 that promotes building peace through online communications.

Peace X Peace was founded in 2002 by Patricia Smith Melton, who gathered experts in peace and women's rights from around the world (including Isabel Allende, the Chilean novelist; Susan Collin Marks, the Australian-born co-founder of Search for Common Ground; and Fatima Gailani, the Afghan head of the Red Crescent) to elaborate a women's response to the September 11 attacks.

Dr. Sarah McCue served as the first President, Dr. Pat Morris served as executive director of Peace X Peace, and in 2010 Kim Weichel was named CEO.