The International Marine Contractors Association (IMCA) is the international trade association representing offshore, marine, and underwater engineering companies.
With a membership (as of October 2008) of over 550 companies in more than 50 countries, IMCA has grown fourfold since 1995 both in terms of members and of countries represented.
There are separate categories of membership for contractor, supplier, training establishment, personnel agency and non-voting corresponding (oil companies, governmental and regulatory bodies) members (membership is not open to private individuals). Each member joins one or more of IMCA's four divisions (Diving, Marine, Offshore Survey, Remote Systems & ROV) according to its own areas of operation and gains access to the core world-wide activities of IMCA and to its local regional section.