Oring

Oring may refer to:
 * O-ring, a gasket or seal with an O-shaped cross-section
 * O-ring chain, a specialized type of roller chain
 * Oring language, in Nigeria
 * Orienteering
 * Fox Oring
 * OR-ing as an operation of logical disjunction, in logic, electronics, or computer science
 * Ring of O, the BDSM jewelry
 * O-Ring theory of economic development
 * O-Ring failure as a cause of the Space Shuttle Challenger disaster
 * O ring (smoke), trick while exhaling smoke