Newcastle

Newcastle usually refers to either:
 * Newcastle upon Tyne, a city in Tyne and Wear, England; or
 * Newcastle, New South Wales, a metropolitan area in Australia

Newcastle or New Castle may also refer to:

Australia

 * City of Newcastle, a local government area in New South Wales
 * Division of Newcastle, a federal electoral division in New South Wales
 * Electoral district of Newcastle, an electoral district of the New South Wales Legislative Assembly
 * Newcastle Waters, Northern Territory, a small settlement on the Stuart Highway in the Northern Territory
 * Toodyay, Western Australia, known as Newcastle until 1910

Canada

 * Newcastle (electoral district), a provincial electoral district in the Canadian province of British Columbia
 * Newcastle, Alberta, a former village now within the Town of Drumheller
 * Newcastle, New Brunswick, a Canadian urban neighbourhood in the City of Miramichi
 * Newcastle, Ontario, a community in the Municipality of Clarington in Durham Region
 * Newcastle District, a historic district in Upper Canada which existed until 1849

Republic of Ireland

 * Newcastle, County Tipperary, Ireland
 * Newcastle, County Wicklow, Ireland
 * Newcastle, South Dublin, Ireland
 * Newcastle West, County Limerick, Ireland

Jamaica

 * Newcastle, Jamaica

Saint Kitts and Nevis

 * Newcastle, Saint Kitts and Nevis

South Africa

 * Newcastle, KwaZulu-Natal, South Africa

England

 * Newcastle, Shropshire (Newcastle on Clun), a village (and parish) in south Shropshire
 * Newcastle-under-Lyme, the principal town of the Borough of Newcastle-under-Lyme, Staffordshire
 * Newcastle-under-Lyme (borough), a local government district with borough status in Staffordshire
 * Newcastle-under-Lyme (UK Parliament constituency), a constituency represented in the House of Commons
 * Newcastle-under-Lyme Rural District, a rural district in the county of Staffordshire
 * Newcastle upon Tyne, a city in Tyne and Wear
 * Newcastle upon Tyne City Centre, the central business district of Newcastle upon Tyne
 * Newcastle upon Tyne Central (UK Parliament constituency), a constituency represented in the House of Commons
 * Newcastle-upon-Tyne (UK Parliament constituency), a former Borough constituency in the county of Northumberland

Northern Ireland

 * Newcastle, County Down, a small town in County Down

Wales

 * Newcastle, Bridgend, Glamorgan, Wales
 * Newcastle, Monmouthshire, Wales
 * Newcastle Emlyn, Carmarthenshire, Wales

United States

 * Newcastle, California, an unincorporated town in Placer County
 * New Castle, Colorado, a Home Rule Municipality in Garfield County
 * New Castle County, Delaware, the northernmost of the three counties
 * New Castle Hundred, an unincorporated subdivision of New Castle County, Delaware
 * New Castle, Delaware, a city in New Castle County
 * Webster City, Iowa, formerly Newcastle, county seat of Hamilton County
 * Newcastle, Illinois, a town in Saline County, Illinois
 * New Castle, Indiana, a city in Henry County
 * New Castle, Kentucky, a city in Henry County
 * Damariscotta-Newcastle, Maine, a census-designated place in Lincoln County
 * Newcastle, Maine, a town in Lincoln County
 * Newcastle, Nebraska, a village in Dixon County
 * Newcastle Township, Dixon County, Nebraska, a township in Dixon County
 * New Castle, New Hampshire, a town in Rockingham County
 * New Castle, New York, a town in Westchester County
 * Newcastle, Ohio, an unincorporated community
 * Newcastle Township, Coshocton County, Ohio, one of the twenty-two townships of Coshocton County
 * Newcastle, Oklahoma, the largest city in McClain County
 * New Castle Northwest, Pennsylvania, a census-designated place in Lawrence County
 * New Castle Township, Schuylkill County, Pennsylvania, a township in Schuylkill County
 * New Castle, Pennsylvania, a city in Lawrence County
 * South New Castle, Pennsylvania, a borough in Lawrence County
 * Newcastle, Texas, a city in Young County
 * Newcastle, Utah, an unincorporated community in southwestern Iron County
 * New Castle, Virginia, the only town in Craig County
 * Newcastle, Washington, a city in King County
 * Newcastle, Wyoming, a city located in Weston County

Sport

 * Newcastle Knights, an Australian rugby league team in Newcastle, NSW
 * Newcastle United F.C., an English association football club in Newcastle upon Tyne
 * Newcastle United Jets FC, an Australian association football club in Newcastle, NSW
 * Newcastle Falcons, an English Rugby Union club in Newcastle upon Tyne
 * Newcastle Eagles, the most successful team in the history of the British Basketball League (BBL)

Transportation

 * Newcastle Airport, airport of Newcastle-upon-Tyne, England
 * New Castle Airport, a public airport located in an unincorporated part of New Castle County, Delaware
 * New Castle District, a railroad line owned and operated by the Norfolk Southern Railway in Ohio and Indiana

Entertainment

 * Newcastle (film) a 2008 Australian film
 * Newcastle Publishing Company, a Southern California-based small trade paperback publisher

Other

 * HMAS Newcastle, an Adelaide class frigate of the Royal Australian Navy
 * HMS Newcastle, a name given to eight ships of the British Royal Navy
 * Newcastle Brown Ale, a brand of beer produced by Scottish & Newcastle
 * New Castle (Stuttgart), a palace in Stuttgart, Germany
 * New Castle Correctional Facility, a prison located in New Castle, Indiana
 * New Castle School of Trades, a technical trades school in Pulaski, Pennsylvania
 * Newcastle disease, a highly contagious bird disease
 * Newcastle, an Athlon 64 processor core revision