Zeltner is a surname. Notable people with the surname include:
Bruno Zeltner (born 1967), Swiss sailor Gustav Georg Zeltner (1672–1738), German theologian Jürg Zeltner (1967–2020), Swiss businessman Michelle Zeltner (born 1991), Swiss heptathlete Paul E. Zeltner (1925–2018), American politician Peter Josef Zeltner (1765–1830), Swiss officer, politician and diplomat Thomas Zeltner (born 1947), Swiss physician, lawyer and politician Tina Zeltner (born 1992), Austrian judoka Trevor Zeltner (born 1951), Australian rules footballer