| Abbreviation | Definition |
|---|---|
| HOTS | Hope Of The States |
| HP | Highland Park |
| HR | Hampton Roads, Virginia |
| HSUS | Historical Statistics of the United States |
| HSUS | Humane Society of the United States |
| IA | Iowa |
| IA | owa |
| ID | daho |
| ID | Idaho |
| IL | Illinois |
| IL | llinois |
| ILSC | Illinois, South Central |
| IN | Indiana |
| IN | ndiana |
| IND | Indiana |
| IOM | Indiana, Ohio, and Michigan |
| IRC | Indian River County |
| ISAF | Independent States Allied Forces |
| ISASC | International Study on Altered States of Consciousness |
| ISBO | Islamic States Boarding Organisation |