Harold is an Old English name, meaning "army leader". It is a common first name.

• Several kings of England and Norway were named Harald or Harold.
• Harold was the title of a book written in 1848 by Edward Bulwer-Lytton, 1st Baron Lytton.
• Harold is the name of an improvisational form popularized by Del Close and now performed by improvisational comedy groups nationwide.
• Harold Berman from the Nickelodeon cartoon Hey Arnold!.