Howler

Howler may refer to:

Howlers, a fictional alien species from the Animorphs setting
Howler, a type of magic object from the Harry Potter series
Howler, the mascot of the Phoenix Coyotes
Hewlêr, the Kurdish name for the city of Arbil, Iraq
The New World monkeys of the genus Alouatta are commonly called Howlers
In slang, especially in British English, a howler is a mistake so egregious that the person catching it is driven to howl with laughter, it is used often to refer to a footballing mistake