Tavistock Abbey, also known as the Abbey of Saint Mary and Saint Rumon, is a ruined Benedictine abbey in Tavistock, Devon. Nothing remains of the abbey except the refectory, two gateways and a porch. The abbey church, dedicated to Our Lady and St Rumon, was destroyed by Danish raiders in 997 and rebuilt under Lyfing, the second abbot. The church was further rebuilt in 1285 and the greater part of the abbey between 1457 and 1458.

Tavistock is an ancient stannary and market town within West Devon, England. It is situated on the River Tavy from which its name derives. At the 2011 census the three electoral wards had a population of 13,028. It traces its recorded history back to at least 961 when Tavistock Abbey, whose ruins lie in the centre of the town, was founded. Its most famous son is Sir Francis Drake.