Arnold is a given name deriving from the Germanic words for arn (eagle) and walden (to rule). The name had largely disappeared from use by the 19th Century, but was then revived along with many other medieval Germanic names.
Arnold may refer to:
- Saint Arnold, disambiguation
Placenames
- Arnold, California, USA
- Arnold, Maryland, USA
- Arnold, Michigan, USA
- Arnold, Minnesota, USA
- Arnold, Missouri, USA
- Arnold, Nebraska, USA
- Arnold, Nottinghamshire, England
- Arnold, Pennsylvania, USA
- Arnold, Victoria, Australia
Other
- Arnold (band), a London, England-based indie band
- Arnold, character in the Scholastic book and cartoon series The Magic School Bus
- Arnold (Hey Arnold!), the main character in Hey Arnold!
- Arnold (automobile), a short-lived English car
- Arnold (comic strip), a comic strip from the mid-1980s
- Arnold (crater), crater on the Moon
- Arnold Arboretum of Harvard University, botanical garden in Massachusetts
- Arnold Worldwide, an American advertising agency
People with the surname Arnold
- Benedict Arnold, American Revolutionary War general
- Christoph Arnold, German astronomer
- Craig Arnold, American poet
- Eberhard Arnold, Christian writer
- Edwin Arnold, English poet and journalist
- Friedrich Arnold, Anatomist
- Gottfried Arnold, German Protestant theologian
- Henry H. Arnold, American pilot and Air Force commander
- James R. Arnold, lunar and planetary scientist
- Joseph Arnold, surgeon and naturalist
- Karl Arnold
- Ken Arnold, computer scientist and author
- Malcolm Arnold, British composer
- Mark Arnold, American punk rock musician
- Mary Augusta Arnold, English author
- Matthew Arnold, English poet
- Ruth Metzler-Arnold, former member of the Swiss Federal Council
- Thomas Arnold, schoolmaster of Rugby School, England
- Tom Arnold (academic), a 19th-century British academic
- Tom Arnold (actor), an American actor
- Tom Arnold (politician), a British politician
- Vladimir Arnold, Russian mathematician
Fictional
- Kevin Arnold, the main character in The Wonder Years
People with the given name Arnold
- Arnold Brown, the 11th General of The Salvation Army
- Arnold Fruchtenbaum, theologian and founder of Ariel Ministries
- Arnold Jackson, a lead character on Diff'rent Strokes
- Arnold Palmer, American golfer
- Arnold Schwarzenegger, Austrian-born American actor and politician
Fictional
- Arnold (Hey Arnold!), the main character in Hey Arnold!
- Arnold Rimmer, a character from Red Dwarf
- Arnold Ziffel, a character on Green Acres