IMCO may refer to:

• the Intercontinental Manufacturing Company
• the Intermountain Manufacturing Company
• the Julius Meister & Co, Austrian lighter manufacturer
• the Committee on the Internal Market and Consumer Protection of the European Parliament
• the Mexican Institute for Competitiveness or Instituto Mexicano para la Competitividad
• the International Match Corporation, New York, founded 1923. Part of Kreuger & Toll. Bankrupt in 1932.
• the company IMCO Carbide Tool
• the (former) olympic windsurfing class Mistral One Design Class
• the Inter-Governmental Maritime Consultative Organization until 1982, today IMO
• the orthopedic surgical method, Intramedullary Cement Osteosynthesis