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