Hayn

Hayn may refer to:

Places

 * Hayn, Saxony-Anhalt, Germany
 * Hayn, old name for Großenhain, Germany
 * Hayn, Hesse, Germany
 * Hayn, Thuringia, Germany
 * Jabal al-ʿHayn, Saudi Arabia

Other

 * Hayn (crater), a lunar crater
 * Friedrich Hayn (1863–1928), German astronomer