Aighetta guitar quartet

Aurora Guitar Quartet

Barrios Guitar Quartet

The Brazilian Guitar Quartet

The Brouwer Quartet

The Canadian Guitar Quartet

Cedar and Spruce Quartet

The Chilean Guitar Quartet

The Cone Guitar Quartet

The Corona Guitar Quartet

Entrequatre Guitar Quartet

Eos Guitar Quartet

EON Guitar Quartet

Festival of Four

The Georgia Guitar Quartet

Guitars A Quattro

Guitar4mation

Guitar Trek

Kasilag Guitar Quartet

Los Angeles Guitar Quartet

Los Romeros Guitar Quartet

New York Guitar Quartet

Opera Nova Guitar Quartet

The Prague Guitar Quartet

Quatuor Amanecer

Quatuor de Champagne

Quaternaglia

Quartetto de guitarras San Pedro

Quartetto Chitarristico Italiano

Quartetto Nexus

Quartetto Torres

Quatuor Linhares

Romeros Guitar Quartet

Salzburger Guitar Quartet

San Francisco Guitar Quartet

Spanish Art Guitar Quartet

"Take four" Guitar Quartet

Tokyo Guitar Quartet

Tanagra Guitar Quartet

Vancouver Guitar Quartet

Zagreb Guitar Quartet