Delaware Route 273 (DE 273) is a state highway in New Castle County, Delaware. The route runs from Maryland Route 273 (MD 273) at the Maryland border near Newark east to DE 9 and DE 141 in New Castle. The route runs through suburban areas between Newark and New Castle as a four-lane divided highway, passing through Ogletown and Christiana. DE 273 intersects DE 896 in downtown Newark, DE 2/DE 72 on the eastern edge of Newark, DE 4 in Ogletown, Interstate 95 (I-95), DE 7, and DE 1 in Christiana, DE 37 in Pleasantville, and DE 58 and U.S. Route 13 (US 13)/US 40 in Hares Corner.