Ply, Pli, Plies or Plying may refer to:

Common uses

Ply (layer), typically of paper or wood

• Plywood, made of layers of wood

• Tyre ply, a layer of cords embedded in the rubber of a tire

Places

• Plymouth railway station, England, station code PLY

• Plymouth Municipal Airport (Indiana), IATA airport code PLY

People

• Plies (rapper), American rapper

Arts, entertainment, and media

• Ply (game theory), a turn in game play

• PLY (postnominal), a postnominal for athletes that participate in the Paralympic Games

Computing and technology

• PLY (file format) or Polygon File Format

• PLY (Python Lex-Yacc), a parsing tool for Python

• Plying, a spinning technique to make yarn

Other uses

• Abbreviation of polysexual