| Compact for Education | 1984 |
| Compact on Mental Health | 1972 |
| Driver License Compact | 1985 |
| Emergency Management Assistance Compact | 2000 |
| Interstate Agreement on Detainers | 1970 |
| Interstate Agreement on Qualifications of Educational Personnel | 1973 |
| Interstate Compact for Juveniles | 1970 |
| Interstate Compact on Adoption and Medical Assistance | 2000 |
| Interstate Compact on Educational Opportunity for Military Children | 2013 |
| Interstate Compact on the Placement of Children | 1989 |
| Interstate Corrections Compact | 1990 |
| Interstate Insurance Product Regulation Compact | 2008 |
| Interstate Medical Licensure Compact | 2018 |
| Metropolitan Washington Airports Authority | 1985 |
| Multistate Lottery Agreement | 1988 |
| Multistate Tax Compact | |
| National Popular Vote Interstate Compact | 2010 |
| Nonresident Violator Compact | 1980 |
| Physical Therapy Licensure Compact | 2021 |
| Potomac River Basin Interstate Compact | 1940 |
| Potomac River Bridges Towing Compact | 1991 |
| Psychology Interjurisdictional Compact | 2021 |
| State Authorization Reciprocity Agreement | 2016 |
| Uniform Unclaimed Property Act | 1981 |
| Washington Metropolitan Area Transit Regulation Compact | 1960 |
| Washington Metropolitan Area Transity Authority Compact | 1966 |
| Washington Metrorail Safety Commission | 2017 |