Matra Marconi Space (MMS) was a Franco-British aerospace company. It was established in 1990 as a joint venture between the space and telecommunication divisions of the Lagardère Group (Matra Espace) and the GEC group (Marconi Space Systems). In 1994 it acquired British Aerospace Space Systems. British Aerospace regained an interest in the company when it merged with GEC's Marconi Electronic Systems to form BAE Systems.

In 2000, it was merged with the space division of DaimlerChrysler Aerospace AG (DASA) to form Astrium.