Marston Moretaine (or Moreteyne) is a village in central Bedfordshire.
The village has Saxon origins, Marston Moretaine being listed in a Saxon charter in 969 as Mercstuninga. In the Domesday Book, the village was listed as Merestone. The name is derived from the Old English for settlement by a marsh. The manor was held by the Moretaine family for a time. The official name of the parish was changed to Marston Moreteyne in 2018 though Moretaine is still used in many places such as road signs.
The village is located next to the Millennium Country Park in the Marston Vale in central Bedfordshire. The village is located in a redevelopment area so might be expected to expand in future years. The village is served by Millbrook railway station on the Marston Vale Line.
St Mary the Virgin's parish church dates from 1340 though most of the surviving church was rebuilt in the mid 14th century. The church unusually has a detached tower from the next of the church, the tower being about 20m from the north wall of the chancel.