IOD or Iod may refer to:
- Ignition off draw, the drawing of electric current in a vehicle while shut off
- Indian Ocean Dipole, an irregular oscillation of sea surface temperatures
- Institute of Directors, a British professional organisation
- Interactive Orbit Determination, a data reporting format for satellite observation
- International One Design, a sailboat designed in the 1930s
- Iod (river), a river in Romania, tributary of the Mureș
- Iod, a village in the commune Răstolița, Mureș County, Romania
This disambiguation page lists articles associated with the title IOD.
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