Laun is the German spelling of Louny in the Czech Republic. It may also refer to:
Alfred A. Laun Jr. (1905–1964), American politician Friedrich Laun (1770–1849), pseudonym of Friedrich August Schulze, German novelist Henri van Laun (1820–1896), Dutch writer, translator and teacher Nikolaus von Laun (c. 1300 – 1371), German friar and scholar