A trio is a group of three identical or similar objects, or a grouping of three persons for a common purpose.

In music

• Trio (music), three people performing music in some way
• Piano trio (piano, violin, cello)
• String trio (violin, viola, cello)
• Clarinet-violin-piano trio (clarinet, violin, piano)
• Power trio (electric guitar, bass guitar, drum kit)
• Harmonica trio (chromatic harmonica, bass harmonica, chord harmonica)
• The middle section of a piece in ternary form
• The third section of a march (music)
• Trio (band), a German pop band who wrote "Da da da"
• The Trio, one incarnation of the Trey Anastasio Band
• Trio (album), a 1987 recording by Dolly Parton, Emmylou Harris and Linda Ronstadt
• Trio 2 (album), a 1998 recording by Dolly Parton, Emmylou Harris and Linda Ronstadt
• The Trio, a live 1961 album featuring a jazz trio led by the Canadian jazz pianist Oscar Peterson

In other entertainment:

• Trio (TV network), a former American cable and satellite television channel owned by NBC Universal
• Trio (novel), a 1943 novel by Dorothy Baker
• Trio (1950 film), a movie directed by Ken Annakin

Trio may also refer to:

• Trio AB, a Swedish telecommunications company
• Trio, South Carolina; the zip code is 29595
• The European trade name of Japanese concern Kenwood Electronics

See also

• Triplet (disambiguation)
• Triad (disambiguation)
• Category:Fictional trios

ثلاثي (موسيقى) | Trio | Trio | Trio (homonymie) | 트리오 | Trio | 三人組 | Trio | Trio | Trio