| Department | Name | Phone | Campus | |
|---|---|---|---|---|
| Health Information Technology | OSU Center for Health Sciences | |||
| HEALTH SCIENCES | PENNY RIDENOUR | OSU Oklahoma City | ||
| Health Services Business Office | Jack Henneha | 405-744-7013 | OSU Stillwater | |
| HIGH PERFORMANCE COMPUTING CENTER | PRATUL AGARWAL | 405-744-4455 | hpcc@okstate.edu | OSU Stillwater |
| HISTORY | BRIAN HOSMER | 405-744-5679 | history@okstate.edu | OSU Stillwater |
| HONORS COLLEGE | KEITH GARBUTT | 405-744-6799 | honors@okstate.edu | OSU Stillwater |
| HORTICULTURE | JUSTIN WEEAKS | 405-945-3358 | OSU Oklahoma City | |
| HORTICULTURE & LANDSCAPE ARCHITECTURE | Justin Moss | 405-744-5414 | OSU Stillwater | |
| HOT DOGS USA | 405-744-6116 | dining@okstate.edu | OSU Stillwater | |
| Housing & Residential Life | Mike Hunsucker | 405-744-5592 | reslife@okstate.edu | OSU Stillwater |