Harwich Port (also spelled Harwichport) is a small affluent seaside community and census-designated place (CDP) situated along the Nantucket Sound in the town of Harwich in Barnstable County, Massachusetts, United States.

Well known residents include Bill O'Brien, former head coach and general manager of the Houston Texans, an American football team.

Saquatucket and Wychmere Harbors are located in Harwich Port.

[2] As of the census[5] of 2000, there were 1,809 people, 1,000 households, and 485 families residing in the CDP.

46.9% of all households were made up of individuals, and 29.7% had someone living alone who was 65 years of age or older.