Rosa Luxemburg (born Rosalia Luxenburg), a Polish-German Marxist revolutionary

Grand Duchy of Luxembourg, a sovereign country in western Europe

Luxembourg (city), the capital city of the country

Duchy of Luxembourg, a historical state

County of Luxembourg, a historical state

Christoph Luxenberg, a German scholar and professor

Luxemburg Township, Minnesota

Luxembourg Palace, located inside the Luxembourg Garden

Luxemburg, Wisconsin

Luxembourg Garden, in Paris, France

Luxemburg, Iowa

Luxembourg, an album by the English band The Bluetones

Luxembourg (district), the south-western part of the country

The House of Luxembourg, a medieval German royal family

Luxembourg (canton), one subdivision of Luxembourg district

Musée du Luxembourg, in Paris, France

Rut Blees Luxemburg, a German photographer

Radio Luxembourg, the country's radio station

The following is in English always spelled Luxembourg — (though in German and Dutch always Luxemburg):

Luxembourg (Belgium), a province of Wallonia, Belgium

François-Henri de Montmorency, duc de Luxembourg, a Marshal of France

Luxembourg, an indie band from London, UK