• A single unit
• A Musical piece - a work of music
• A firearm
• Any apparatus used to smoke cannabis, but usually a pipe
• A chess piece
• A puzzle piece.

Pieces may refer to:

• Pieces (Band), The band consisting of Buckethead and Brain
• Pieces (Fool's Garden song), a song by German pop band Fool's Garden
• Pieces (song), a song by Sum 41
• Pieces (film), a cult horror film from 1982
• Pieces (video game), a Super Nintendo game.