East Coast Bays is a string of small suburbs that form the northernmost part of the North Shore, part of the contiguous Auckland metropolitan area in New Zealand. The suburbs line the north-east coast of the city along the shore of the Hauraki Gulf and Rangitoto Channel. They include, from north to south, Long Bay, Torbay, Waiake Bay, Browns Bay, Rothesay Bay, Murrays Bay, Mairangi Bay, Campbells Bay and Castor Bay. Most of the East Coast Bays are covered under the East Coast Bays subdivision of the Hibiscus and Bays local board area.

The North Shore is one of the major geographical regions of Auckland, the largest city in New Zealand. The area is defined as the northern shores of the Waitematā Harbour as far north as the Ōkura River.