Cape Cod Regional Technical High School, also known as Cape Tech, Cape Cod Tech, Lower Cape Tech, and sometimes abbreviated as CCT, is a public vocational and technical high school located in Harwich, Massachusetts, United States.

Harwich is a New England town on Cape Cod, in Barnstable County in the state of Massachusetts in the United States. At the 2020 census it had a population of 13,440. Harwich experiences a seasonal increase to roughly 37,000. The town is a popular vacation spot, located near the Cape Cod National Seashore. Harwich's beaches are on the Nantucket Sound side of Cape Cod. Harwich has three active harbors. Saquatucket, Wychmere and Allen Harbors are all in Harwich Port. The town of Harwich includes the villages of Pleasant Lake, West Harwich, East Harwich, Harwich Port, Harwich Center, North Harwich and South Harwich.