Ziegler is a common German surname meaning "bricklayer", and may refer to the following people:

• Daniel Ziegler (1804-1876), an American clergyman and entomologist

• Gregorius Thomas Ziegler (1770-1852), a Benedictine monk and bishop of Linz

• Jean Ziegler (b.1934), a Swiss professor of sociology and politician, active in the anti-globalization movement

• John Ziegler (b.1934), a lawyer and former president of the National Hockey League
• John Ziegler (talk show host) (b.1967), a radio talk show host in Los Angeles
• John Bosley Ziegler, an American physician who pioneered the athletic use of the steroid Dianabol
• Karl Ziegler (1898-1973), a German chemist and Nobel laureate
• Kate Ziegler (b.1988), an American swimmer
• Matilda Ziegler (b.1964), an English actress

• Philip Ziegler (b.1929), a British biographer and historian

• Reto Ziegler (b.1986), a Swiss soccer player
• Ron Ziegler (1939-2003), Richard Nixon's press secretary
• Thomas Ziegler (b.1978), a Swiss hockey player

It may also refer to:

• Ziegler-Natta catalyst, a chemical reagent named after Karl Ziegler and Giulio Natta
• Ziegler School of Rabbinic Studies, a graduate program at the University of Judaism in Los Angeles
• Albert Ziegler GmbH, a German manufacturer of fire engines
• Toby Ziegler, a fictional character on the television drama The West Wing

Ziegler