Double decker

A double-decker is a vehicle that has two levels for passengers or cargo, one deck above the other. Such vehicles include:
 * Aerial tramway
 * Bilevel rail car a rail passenger vehicle consisting of 2 levels
 * Bombardier BiLevel Coach
 * Bombardier MultiLevel Coach
 * Dome car
 * Double-deck aircraft
 * Double-deck elevator
 * Double-decker bus
 * Double-decker tram
 * Superliner (railcar)
 * Autorack (US) or car transporter (UK), a railway vehicle for transporting cars or other road vehicles
 * Car carrier trailer or auto carrier, a road trailer for transporting cars or other road vehicles
 * Two-decker is a sailing ship with 2 decks armed with cannon.

A double-decker may also refer to:
 * Double Decker (chocolate bar)
 * Double-decker sandwich, such as a club sandwich or Dagwood sandwich, with two layers of meat and condiments sandwiched between three pieces of bread
 * A multi-level roadway such as those found in Chicago
 * A multi-level bridge
 * A double-decker outhouse
 * Double Decker, a 1984 Hong Kong film
 * Double Decker (2011 film), a 2011 Kannada-language film
 * Double Decker! Doug & Kirill, a 2018 Japanese anime series