Claude Maxwell "Max" Stanley (1904–1984) was an American civil engineer, entrepreneur, philanthropist, peace activist, author and world citizen. He founded Stanley Consultants, an engineering and consulting firm, in 1939 with his younger brother Art. In 1943 he co-founded HON Industries, originally named Home-O-Nize, an office furniture manufacturing company; and, along with his wife Elizabeth, created and endowed the Stanley Foundation (now the Stanley Center for Peace and Security) in 1956, which is a global policy organization which focuses on mitigating climate change, avoiding the use of nuclear weapons, and preventing mass violence and atrocities. All three organizations are headquartered in Muscatine, Iowa, United States.