In KONECT, each network belongs to a category which denotes its semantics. Examples of categories are social networks, road networks, and citation networks.
| Category | Count | |
| Affiliation | 17 | |
| Animal | 9 | |
| Authorship | 809 | |
| Citation | 7 | |
| Co-authorship | 8 | |
| Co-citation | 2 | |
| Communication | 42 | |
| Computer | 14 | |
| Feature | 17 | |
| Human contact | 7 | |
| Human social | 12 | |
| Hyperlink | 197 | |
| Infrastructure | 23 | |
| Interaction | 30 | |
| Lexical | 5 | |
| Metabolic | 8 | |
| Miscellaneous | 15 | |
| Neural | 1 | |
| Online contact | 15 | |
| Online social | 50 | |
| Rating | 21 | |
| Software | 3 | |
| Text | 10 | |
| Trophic | 4 |