Wentlooge (Welsh: Gwynllŵg), sometimes known as Wentloog, is a community in the southwest of the city of Newport, South Wales, in the Marshfield ward.

The community includes Peterstone Wentlooge and St.

The community is bounded by Percoed reen to the northwest, the Ebbw River to the northeast, the Bristol Channel to the southeast and the South Wales Main Line to the southwest.

[3] The West Usk Lighthouse is built on the shore of the Bristol Channel in the far east of the community.

[3] Located between Cardiff and Newport, and in a non-protected but designated green belt to allow for definition between the two cities, the area has been subjected to a series of planned light industrial developments.