North Sydney is a suburb and commercial district on the Lower North Shore of Sydney, New South Wales, Australia. It is also the namesake of:

North Sydney Council, a local government area in Sydney Division of North Sydney, an electoral division serving the suburb North Sydney Bears, a professional rugby league football club of North Sydney, NSW North Sydney Cricket Club North Sydney Oval, a multi-use sporting facility in North Sydney, NSW

It may also refer to a place in Nova Scotia, Canada: North Sydney, Nova Scotia, a region of the Cape Breton Regional Municipality in Canada