East Coast Bays is the collective name for a series of small suburbs of North Shore, in the Auckland metropolitan area of New Zealand which line the northeast coast of the city along the shore of the Hauraki Gulf and Rangitoto Channel.

The suburbs, from north to south, include Long Bay, Torbay, Browns Bay, Rothesay Bay, Murrays Bay, Mairangi Bay and Campbell's Bay. They stretch for nine kilometres from Castor Bay, Milford, at the northern end of Lake Pupuke to Toroa Point, at the northern limit of the Auckland urban area.

Within the area of the East Coast Bays are numerous high schools - such as Rangitoto College, which is the largest high school in New Zealand with over 3,000 students between Year 9 and Year 13 of their schooling ('Form 3 to Form 7') attending in 2004.

East Coast Bays is also the name of an electorate from which an MP is elected to serve in the New Zealand Parliament - it's current MP is Murray McCully.