| Audiology and Speech Language Pathology Interstate Compact | 2024 |
| Compact for Education | 1980 |
| Compact on Mental Health | 1957 |
| Driver License Compact | 1986 |
| Emergency Management Assistance Compact | 2002 |
| Interstate Agreement on Detainers | 1981 |
| Interstate Agreement on Qualifications of Educational Personnel | 1970 |
| Interstate Compact for Adult Offender Supervision | 2002 |
| Interstate Compact for Juveniles | 1960 |
| Interstate Compact on Adoption and Medical Assistance | 2008 |
| Interstate Compact on Educational Opportunity for Military Children | 2009 |
| Interstate Compact on the Placement of Children | 1976 |
| Interstate Compact to Conserve Oil and Gas | 1980 |
| Interstate Corrections Compact | 1984 |
| Interstate Insurance Product Regulation Compact | 2007 |
| Interstate Mining Compact | 2013 |
| Multistate Tax Compact | 1970 |
| National Crime Prevention and Privacy Compact | 2001 |
| National Guard Mutual Assistance Compact | 1968 |
| Northwest Interstate Compact on Low-Level Radioactive Waste Management | 1983 |
| Northwest Wildland Fire Protection Agreement | 1998 |
| Pacific Northwest Economic Region | 1991 |
| Pacific Northwest Emergency Management Arrangement | |
| Pacific States Marine Fisheries Compact | 1962 |
| Physical Therapy Licensure Compact | 2024 |
| State Authorization Reciprocity Agreement | 2014 |
| Uniform Unclaimed Property Act | 1986 |
| Western Interstate Corrections Compact | 1961 |
| Western Interstate Nuclear Compact | 1969 |
| Western Regional Education Compact | 1955 |
| Wildlife Violator Compact | 2008 |