Messenger

Template:Wiktionarypar Messenger may mean:

Bicycle messenger, a bicyclist who transports packages through cities
Chemical messenger, a molecule used for cellular signalling.
MESSENGER, a NASA probe to Mercury launched in 2004.
Messenger (album), the third album by Edwin McCain, released on June 15, 1999.
Messenger (horse), an English thoroughbred horse that was foaled in 1780, and who was the originating sire of modern-day standardbred horses.
Messenger (novel), a novel written by Lois Lowry.
Messenger RNA (mRNA), RNA that carries information from DNA to the ribosome sites of protein synthesis in a cell.

An instant messaging client or service in general, or specifically one of the following services:
- AOL Instant Messenger, an ad-supported instant messaging and presence computer program, published by America Online
- GTalk, an instant messaging client published by Google.
- MSN Messenger, an instant messaging client published by Microsoft.
- Yahoo! Messenger, an instant messaging client published by Yahoo!.
The Messenger: The Story of Joan of Arc, film
Muhammad, known as The Messenger in Islam