Lu or Lü may refer to:
Luxembourg ( (listen); Luxembourgish: Lëtzebuerg [ˈlətsəbuə̯ɕ] (listen); French: Luxembourg; German: Luxemburg), officially the Grand Duchy of Luxembourg, is a small landlocked country in western Europe.
Ludwig van Beethoven ( (listen); German: [ˈluːtvɪç fan ˈbeːthoːfn̩] (listen); baptised 17 December 1770 – 26 March 1827) was a German composer and pianist.
The lungs are the primary organs of the respiratory system 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.
Lung cancer, also known as lung carcinoma, is a malignant lung tumor characterized by uncontrolled cell growth in tissues of the lung.
Lucknow ( (listen) Lakhna'ū) is the capital and largest city of the Indian state of Uttar Pradesh, and is also the administrative headquarters of the eponymous district and division.