| IACUC | FR 101 | 826-3256 | |
| ID Services, Library: see also Library - ID Services | Library 101 | 826-3431 | |
| ideaFest | | | |
| Index, Humboldt Economic | Siemens Hall 206E | 826-5544 | 826-3206 |
| Indian Natural Resource Science & Engineering Program (INRSEP) | Walter Warren House 38 | 826-4994 | 826-4995 |
| Indian Programs | | | |
| Indian Tribal & Educational Personnel Program (ITEPP) | Brero House 93 | 826-3672 | 826-3675 |
| Information Security | Van Matre Hall 201 | 826-3815 | |
| Information Technology Services | Van Matre Hall 201 | 826-3815 | 826-6100 |
| Information Technology Services Project Office | Gist Hall 209 | 826-3815 | 826-5088 |
| Information Technology Services: see also Technology Equipment Checkout, Telecommunications & Network Services, Technology Development & Support Services, Media Production, or University Computing Services |
| Infrastructure Improvements Project | Schmidt House | 826-5097 | 826-5089 |
| Institute for Spatial Analysis | FOR 202 | 826-5417 | 826-4145 |
| Institutional Animal Care and Use Committee | FR 101 | 826-3256 | |
| Institutional Equity, Affirmative Action, & Diversity: see also the Office of Diversity and Inclusion, Student Academic Services Outreach, Talent Search, Upward Bound, Veterans Affairs |
| Institutional Research, Analytics, and Reporting | Siemens Hall 001 | 826-5338 | 826-5332 |
| Institutional Review Board | SBS 427 | 826-5165 | |
| Integrated Curriculum Committee | Siemens Hall 217A | 826-3949 | 826-5480 |
| Interdisciplinary Marijuana Research, Humboldt Institute for | | 826-3216, 826-4446 | |
| Interdisciplinary Studies: Dance Studies | Theater Arts 20 | 826-3566 | |
| Interdisciplinary Studies: International Studies | FH 180 | 826-4494 | 826-4496 |
| Interdisciplinary Studies: Women's Studies | Library 55 | 826-4329 | |
| International Admissions | SBS 211B | 826-4142 | |
| International Education Week | | | |
| International Programs | LIB 203 | 826-4142 | 826-3939 |
| International Studies | FH 180 | 826-4494 | 826-4496 |
| Internships, Academic | GH 122 | 826-4963 | |
| Intramurals | RWC 101 | 826-6011 | 826-3354 |
