A horseshoe moustache, also known as a biker moustache or a Zapata moustache, is a full moustache with vertical extensions grown on the corners of the lips and down the sides of the mouth to the jawline, resembling an upside-down U or a horseshoe. The whiskers grown along the sides of the mouth in the horseshoe are sometimes referred to as "pipes". The moustache is often seen and used as a symbol of masculinity.
The style is popular among sports personalities and entertainers. NFL legend Joe Namath, cowboy actor Sam Elliott, ’70s Hollywood star Elliott Gould, WWF/E wrestling champion Hulk Hogan, Metallica frontman James Hetfield, Leatherman of the Village People and Guns N' Roses Frontman Axl Rose have all worn iconic examples of horseshoe moustaches.
- "American Mustache Institute – Mustache Styles". Retrieved 2013-06-16.