Newport is a town in New Castle County, Delaware, United States. It is on the Christina River. It is best known for being the home of colonial inventor Oliver Evans. The population was 1,055 at the 2010 census. Four limited access highways, I-95, I-295, I-495, and Delaware Route 141 intersect within one mile (1.6 km) of the town.

New Castle County is the northernmost of the three counties of the U.S. state of Delaware. As of the 2020 census, the population was 570,719, making it the most populous county in Delaware, with nearly 60% of the state's population of 989,948. The county seat is Wilmington, which is also the state's most populous city.