Category 3
Category 3 or Category III can refer to:
- Category 3 cable, a specification for data cabling
- British firework classification
- Category 3 tropical cyclone, on any of the tropical cyclone scales
- Category 3 pandemic, on the Pandemic Severity Index, an American influenza pandemic with a case-fatality ratio between 0.5% and 1%
- Category 3 winter storm, on the Northeast Snowfall Impact Scale and the Regional Snowfall Index
- Any of several winter storms listed at list of Northeast Snowfall Impact Scale winter storms
- Category 03 non-silicate mineral - Halides
- Category III, a rating in the Hong Kong motion picture rating system
- Category III, a capability level of aircraft instrument landing systems
- Category III New Testament manuscripts - Eclectic
- Category III measurement - performed in the building installation
- Category III protected area (IUCN) - natural monument
See also
- Class 3 (disambiguation) - class/category equivalence (for labeling)
- Type III (disambiguation) - type/category equivalence (for labeling)
- Group 3 (disambiguation) - group/category equivalence (for labeling)