The Sennybridge Training Area (SENTA) is a UK Ministry of Defence military training area near the village of Sennybridge in Powys, Wales.

It consists of approximately 12,545 ha (31,000 acres) of Ministry of Defence freehold land and 2,428 ha (6,000 acres) of land leased from Forest Enterprise.

[1] It covers 19 km (12 mi) south west to north east and 8 km (5 mi) south east to north west.

[1] It lies to the north of the Brecon Beacons National Park on Mynydd Eppynt.

[4] In 2023 a driver for the British military died on Sennybridge Training Area.