The City of Moreton Bay, known until July 2023 as the Moreton Bay Region, is a local government area in the north of Greater Brisbane in South East Queensland, Australia. Established in 2008, it replaced three established local government areas, the City of Redcliffe and the Shires of Pine Rivers and Caboolture.

With an estimated operating budget of A$391 million and a 2018 population of 459,585, Moreton Bay is the third most populous local government area in Australia behind the City of Brisbane and City of Gold Coast, both of which are also amalgamated entities.

In the 2021 census, the City of Moreton Bay had a population of 476,340 people.

The original inhabitants, or Traditional Owners, of Moreton Bay are the Kabi Kabi, Jinibara and Turrbal Aboriginal people.^{[citation needed]}

Duungidjawu (also known as Kabi Kabi, Cabbee, Carbi, Gabi Gabi) is an Australian Aboriginal language spoken on Duungidjawu country. The Duungidjawu language region includes the landscape within the local government boundaries of Somerset Region and the City of Moreton Bay, particularly the towns of Caboolture, Kilcoy, Woodford and Moore.

At the time the Divisional Boards Act 1879 came into force on 11 November 1879, the present City of Morton Bay was entirely contained within the Caboolture Division, which also included the Sunshine Coast. By 1890, Caboolture Division had shrunk considerably with the separate incorporation of the Pine Division (21 January 1888), Redcliffe Division (5 April 1888) and Maroochy Division (5 July 1890).^{[citation needed]}

With the passage of the Local Authorities Act 1902, Caboolture, Pine and Redcliffe (as well as Maroochy) became Shires on 31 March 1903. Redcliffe was proclaimed a Town on 28 May 1921 and a City on 13 June 1959. A few weeks earlier, on 23 May 1959, Pine was renamed the Shire of Pine Rivers.^{[citation needed]}

In July 2007, the Local Government Reform Commission released its report and recommended the amalgamation of the three local government areas: