Category 4
- Armed Services Vocational Aptitude Battery
- Categories of New Testament manuscripts
- Category 4 cable
- Category 4 fireworks
- Category four stadium
- Class 4 (disambiguation)
- Group 4 (disambiguation)
- IUCN protected area categories
- List of Northeast snowfall impact scale winter storms
- List of regional snowfall index category 4 winter storms
- Measurement category
- Northeast snowfall impact scale
- Regional snowfall index
- Type 4 (disambiguation)
- Vintage car