SO3 may refer to
- Sulfur trioxide, a chemical compound of sulfur and the anhydride of sulfuric acid
- Sulfite, a chemical ion composed of sulfur and oxygen with a 2− charge
- SO(3), the special orthogonal group in 3 dimensions; the rotations that can be given an object in 3-space
- Star Ocean: Till the End of Time, the third main game in the Star Ocean series
- A staff officer of the third class, usually a junior officer
- Special Operations 3 - Planning, of SOE (Special Operations Executive, British, World War II)
- SO3, a TL9000 metric defined as the number of service impact product-attributable outages per NU (normalization unit) per year
This disambiguation page lists articles associated with the same title formed as a letter–number combination.
If an internal link led you here, you may wish to change the link to point directly to the intended article.
If an internal link led you here, you may wish to change the link to point directly to the intended article.