Wenallt Camp, also known as Wenallt Enclosure, is an Iron Age enclosure on the southern slope of Wenallt Hill near Rhiwbina in Cardiff, Wales. The site is sometimes classified as a hillfort. The camp is a scheduled monument.

The camp is a fairly rectangular oval measuring 60 metres (200 ft) north to south by 38 metres (125 ft) protected by a bank and ditch about 12 metres (40 ft) wide and 15 cm (6 in) high. There is an entrance to the south-east, and there are traces of an external stone revetment. Near the middle of the enclosure is a levelled terrace about 7.5 metres (25 ft) in diameter which may have been the site of a hut. The site would have given views across the Cardiff area and over the Bristol Channel.

The camp lies in an area of semi-natural ancient woodland called The Wenallt, which is a popular site for visitors.