Basin may mean:

• Drainage basin, hydrological basin or catchment basin, a region of land where water drains downhill into a specified body of water
• Tarim Basin, located in Xinjiang, China and is one of the largest drainage basins in the world.
• Sedimentary basin, low and usually sinking region that is filled with sediments from adjacent positive areas
• Structural basin, in geology, referring to the basin-shaped warping of underlying bedrock in a region
• Depression (geology), landform lower than the surrounding area, such as the Kalahari Basin
• Oceanic basin, anywhere on Earth that is covered by seawater
• A downdropped fault block, or graben, which fill with sediments
• Wash basin, a bowl (vessel) designed to contain water for the purpose of cleaning hands and other minor ablutions; see also sink
  • An emesis basin is a specific type of basin
• Pudding basin, a kitchen utensil of a rounded internal form and wider at its open top
• Basin, or dock, used for the reception of boats, in which the water level is maintained:
  • canal basin found on inland waterways
  • tidal basin associated with navigable rivers
• Basin of attraction, in the mathematics of nonlinear systems
• Basin (chanson de geste), chanson de geste (epic poem) about a thief of the same name

In places:

• Basin, Wyoming
• The Basin, Victoria
• The Basin, geological feature within Franconia Notch State Park in New Hampshire, United States
• Basin Harbor Club in Vergennes, Vermont
• Basin Mountain, one of the Adirondack High Peaks in the U.S. state of New York
• Basin, Masovian Voivodeship (east-central Poland)

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