Newark-on-Trent or Newark is a market town and civil parish in the Newark and Sherwood district in Nottinghamshire, England. It is on the River Trent, and was historically a major inland port. The A1 road bypasses the town on the line of the ancient Great North Road. The town's origins are likely to be Roman, as it lies on a major Roman road, the Fosse Way. It grew up round Newark Castle, St Mary Magdalene church and later developed as a centre for the wool and cloth trades.

Newark and Sherwood is a local government district in Nottinghamshire, England. It is the largest district by area in the county. The council is based in Newark-on-Trent, the area's largest town. The district also includes the towns of Southwell and Ollerton along with a large rural area containing many villages. Much of the district lies within the ancient Sherwood Forest and there are also extensive forestry plantations in the area.