| ADA | Americans with Disabilities Act |
| BART | Bay Area Rapid Transit |
| CIT | Crisis Intervention Team |
| CoCs | Continuums of Care |
| DART | Dallas Area Rapid Transit |
| DOJ | U.S. Department of Justice |
| DOT | Department of Transportation |
| ED | U.S. Department of Education |
| EMS | Emergency Medical Services |
| GCRTA | Greater Cleveland Regional Transit Authority |
| HART | Honolulu Authority for Rapid Transportation |
| HMIS | Homeless Management Information Services |
| HUD | U.S. Department of Housing and Urban Development |
| LGBTQIA+ | Lesbian, Gay, Bisexual, Transgender, Queer or Questioning, Intersex, Asexual, and More |
| LTD | Lane Transit District |
| MARTA | Metropolitan Atlanta Rapid Transit Authority |
| MBTA | Massachusetts Bay Transportation Authority |
| MTA | New York Metropolitan Transportation Authority |
| PATH | Projects for Assistance in Transition from Homelessness |
| PIT | Point-in-Time |
| RTC Washoe | Regional Transportation Commission of Washoe County, Nevada |
| RTD | Regional Transportation District |
| SEPTA | Southeastern Pennsylvania Transportation Authority |
| TOD | Transit-Oriented Development |
| USICH | U.S. Interagency Council on Homelessness |
| Valley Metro | Valley Metro Regional Public Transportation Authority |
| WMATA | Washington Metropolitan Area Transit Authority |