Category 4 or Category IV may refer to:
- Category 4 cable, a cable that consists of four unshielded twisted-pair wires
- Category 4 fireworks, British fireworks that are for sale only to professionals
- Category 4 tropical cyclone, on any of the Tropical cyclone scales
- Any of several hurricanes listed at list of Category 4 Atlantic hurricanes or list of Category 4 Pacific hurricanes
- Category 4 pandemic, on the Pandemic Severity Index, an American influenza pandemic with a case-fatality ratio between 1% and 2%
- Category 4 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 and list of Regional Snowfall Index Category 4 winter storms
- Category 04 non-silicate mineral - oxides
- Category four stadium, a football stadium of the highest quality as ranked by the UEFA
- Category IV New Testament manuscripts - Western
- Category IV measurement - performed at the source of the low-voltage installation
- Category IV vintage car condition - Very good
- Category IV Armed Forces Qualification Test scores - 10-30 (further subdivided)
- Category IV protected area (IUCN) - Habitat/Species Management Area
See also edit
- Class 4 (disambiguation) - class/category equivalence (for labeling)
- Type 4 (disambiguation) - type/category equivalence (for labeling)
- Group 4 (disambiguation) - group/category equivalence (for labeling)
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