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.
Lutheranism is a major branch of Western Christianity that identifies with the teaching of Martin Luther, a 16th-century German reformer.
Lucifer is an American television series developed by Tom Kapinos that premiered on Fox on January 25, 2016. It is based on the DC Comics character created by Neil Gaiman, Sam Kieth, and Mike Dringenberg taken from the comic book series The Sandman, who later became the protagonist of a spin-off comic book series, both published by DC Comics' Vertigo imprint.
The lungs are the primary organs of the respiratory system in humans and many other animals including a few fish and some snails.
Lung cancer, also known as lung carcinoma, is a malignant lung tumor characterized by uncontrolled cell growth in tissues of the lung.