Lecher may refer to:
People Dr. Berek Lajcher (also spelled Lecher, 1893–1943), Jewish physician and Holocaust resistance leader Ernst Lecher (1856–1926), Austrian physicist Ernst Bacon (Ernst Lecher Bacon, 1898–1990), American composer Otto Lecher (1861–1939), Austrian politician
Other uses Lecher, a person with a very strong, perhaps excessive, sexual desire, called lechery Lecher line, a device for measuring radio wavelengths