The word choir can refer to:

• A musical choir.
• In orchestras, a group of similar instruments is often called a choir. For example, in a symphony orchestra, the group of brass instruments is called the brass choir.
• In a church or cathedral, the choir, or quire, is the area between the nave and the sanctuary or presbytery; the Apse lies beyond, at the farthest East end.
• "The Choir" is a rock band.
• In angelology, an angelic choir is a specific grouping of angels within the angelic hierarchy.