Lu or Lü may refer to:
Luxembourg (Luxembourgish: Lëtzebuerg [ˈlətsəbuəɕ]; German: Luxemburg), officially the Grand Duchy of Luxembourg, is a landlocked country in western Europe.
Ludwig van Beethoven (, ; German: [ˈluːtvɪç fan ˈbeːtˌhoˑfn̩]; baptised 17 December 1770 – 26 March 1827) was a German composer and pianist.
Luiz Inácio Lula da Silva (born 27 October 1945), known simply as Lula, is a Brazilian politician who served as President of Brazil from 1 January 2003 to 1 January 2011. He is a founding member of the Workers' Party (PT) and ran for president three times unsuccessfully, first in the 1989 election, then again in 1994 and 1998. Lula achieved victory in the 2002 election, and was inaugurated as president on 1 January 2003. In the 2006 election he was elected for a second term as president, which ended on 31 December 2010. Succeeded by his former Chief of Staff, Dilma Rousseff, he left an enduring mark on Brazilian politics in the form of Lulism.
The lungs are the primary organs of respiration in humans and many other animals including a few fish and some snails.
Lutheranism is a major branch of Protestant Christianity which identifies with the theology of Martin Luther (1483–1546), a German friar, ecclesiastical reformer and theologian.
The Luftwaffe (German pronunciation: [ˈlʊftvafə]) was the aerial warfare branch of the combined German Wehrmacht military forces during World War II.
Lung cancer, also known as lung carcinoma, is a malignant lung tumor characterized by uncontrolled cell growth in tissues of the lung.