Tanker can refer to:

• Tanker (ship), a ship designed to carry bulk liquids, particularly oil
  • Chemical tanker
  • Supertanker
• Tanker, tank car, or cylinder wagon, a special type of railroad freight car, designed for carrying bulk liquids
• Tanker, tank truck, or tanker lorry, a heavy road vehicle designed for the same purpose
• A piece of firefighting equipment used to carry or shuttle large amounts of water to a fire scene where traditional fire plugs (hydrants) are not available. This piece of equipment is most commonly seen in rural firefighting. See water tender
• Tanker (aircraft), an airplane designed for in-flight refuelling
• Any crew member of a tank
• André Tanker (1941-2003), a Trinidadian musician and composer
• A Tanker, in the massive-multiplayer lingo, a character able to resist or shrug off heavy amounts of damage relatively unharmed. A party with a tanker usually use him as a monster bait -- while he 'takes' the damage, the rest of the party members actually kill the monsters. In some games, a fighter or occasionally thief character will fill this role, while mages attack the monsters