The gamsbart (literally chamois beard) is a tuft of hair traditionally worn as a decoration on hats in the alpine countries of Europe. Originally worn as a hunting trophy and made exclusively from hair from the chamois's lower neck, gamsbarts are today manufactured on a large scale from various animals' hair and are commonly sold at souvenir shops.

A gamsbart is made by enclosing the lower end of the tuft of hair in a setting of metal or horn that allows the upper end to spread in a brush-like fashion. Traditionally, hairs are selected for a dark color at the lower end with a very light tip. The size and diameter of the gamsbart are important signs of the wearer's pride and manliness.

Traditionally, gamsbarts are exclusively placed on hats worn by men; however, recent developments in dirndl fashion have seen gamsbarts added to various places on female dresses.