Members: Ruggero Allifranchini, Hsin-Yun Huang, Kristopher Tong, Mai Motobuchi, Yeesun Kim, Nicholas Kitchen

Borromeo String Quartet is an American classical string quartet, founded in 1989. They are Ensemble-in-Residence at the New England Conservatory Of Music and Gardner Museum.

Current members
Nicholas Kitchen, violin
Kristopher Tong, violin (since 2006)
Mai Motobuchi, viola (since 2000)
Yeesun Kim, cello

Past members
Ruggero Allifranchini, violin (1989-2000)
William Fedkenheuer, violin (2000-2006)
Hsin-Yun Huang, viola (1994-2000)
Ensik Choi, viola (1989-94)