Holladay-Harrington House is a historic estate located at Greenville, New Castle County, Delaware.

It is a 2+1⁄2-story, three bays wide, stuccoed dwelling in the Colonial Revival style.

The house has a hipped roof with wide overhanging eaves, projecting pavilion-like side sun porches, and French doors in all three first floor bays.

The property includes a contributing garage, three small greenhouses, driveway pillars, fountain and concrete pool, retaining wall, metal fencing with grape design near greenhouses, and landscape features.

This article about a property in Delaware on the National Register of Historic Places is a stub.