Leitz

Leitz may refer to several German companies:


 * Esselte Leitz GmbH & Co KG, founded by Louis Leitz in 1896, a German manufacturer of office products
 * Louis Leitz (1846–1918), German inventor and founder of Esselte Leitz GmbH & Co KG
 * Ernst Leitz GmbH, German firm now divided into:
 * Leica Camera, manufacturer of cameras
 * Leica Geosystems, manufacturer of geodetic equipment
 * Leica Microsystems, manufacturer of microscopes and owner of the Leica brand
 * Leica Biosystems, a cancer diagnostics company