Magnis was a Romano-British town and an important market centre for the British Dobunni tribe, located near modern-day Kenchester in Herefordshire, England. The town was shaped as an irregular hexagon, with a single main street along the line of the main Roman Road running east-west through the area, and an irregular pattern of side streets with tightly packed buildings leading off it.
Earthen defences have been found dating from the 2nd century, with later stone defences being built by the 4th century and occupation likely to have continued into the 5th century.
The ruins of a Roman temple possibly associated with a high-status Roman villa, which may have connections to Magnis, lie inside the Weir Garden by the River Wye. There is an octagonal cistern filled by a spring, and a ruined buttress by the river. These are the highest standing Roman ruins in Herefordshire.
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- "Suspected Romano-British Temple, The Weir Gardens". www.Roman-Britain.org. Retrieved 2013-04-04.
- "Roman Riverside Building Complex, The Weir Garden". Herefordshire Monuments Search. Retrieved 2013-04-04.