Harpo
# Harpo

Harpo may refer to:

* Harpo Marx, American comedian, mime artist, and musician best known as a member of the Marx Brothers
* Harpo Productions, American multimedia company founded by Oprah Winfrey ("Harpo" is "Oprah" spelled backwards)
* Harpo (singer), stage name of Jan Svensson, Swedish pop singer
* Slim Harpo, stage name of James Moore, American blues musician
* harpo- was a 1993 facetious proposal for an SI unit prefix standing for $10^{−27}$
