The Forest of Marston Vale is an evolving community forest in Marston Vale, which runs south west from the towns of Bedford and Kempston in Bedfordshire, England towards the M1 motorway.

It is operated by a registered charity called the Forest of Marston Vale Trust.

The total area covered is 61 square miles (158 km2), but most of this land is in private ownership.

According to the official website the park attracts around a quarter of a million visitors a year.

There are plans to create a larger park of over 3 square miles (7.8 km2) to the east of Bedford, which will be called Bedford River Valley Park Archived 5 February 2012 at the Wayback Machine.