| Audiology and Speech Language Pathology Interstate Compact | 2023 |
| Boating Offense Compact | 1992 |
| Columbia River Compact | 1915 |
| Columbia River Gorge Compact | 1987 |
| Compact on Mental Health | 1965 |
| Counseling Compact | 2023 |
| Dentist and Dental Hygienist Compact | 2023 |
| Driver License Compact | 1963 |
| Emergency Management Assistance Compact | 2001 |
| Interstate Agreement on Detainers | 1967 |
| Interstate Agreement on Qualifications of Educational Personnel | 1969 |
| Interstate Compact for Adult Offender Supervision | 2001 |
| Interstate Compact for Juveniles | 1955 |
| Interstate Compact on Adoption and Medical Assistance | 1997 |
| Interstate Compact on Educational Opportunity for Military Children | 2009 |
| Interstate Compact on Licensure of Participants in Horse Racing with Pari-Mutuel Wagering | 2001 |
| Interstate Compact on the Placement of Children | 1971 |
| Interstate Corrections Compact | 1983 |
| Interstate Forest Fire Suppression Compact | 1991 |
| Interstate Insurance Product Regulation Compact | 2005 |
| Interstate Library Compact | 1965 |
| Interstate Medical Licensure Compact | 2017 |
| Interstate Teacher Mobility Compact | 2024 |
| Multistate Highway Transportation Agreement | 1983 |
| Multistate Tax Compact | 1967 |
| National Guard Mutual Assistance Counter-Drug Activities Compact | 1993 |
| National Popular Vote Interstate Compact | 2009 |
| Nonresident Violator Compact | 1993 |
| Northwest Interstate Compact on Low-Level Radioactive Waste Management | 1989 |
| Northwest Power and Conservation Council | 1981 |
| Northwest Wildland Fire Protection Agreement | 1998 |
| Nurse Licensure Compact | 2023 |
| Occupational Therapy Licensure Compact | 2022 |
| Oregon-Washington Columbia River Boundary Compact | 1957 |
| PA Licensure Compact | 2024 |
| Pacific Northwest Economic Region | 1991 |
| Pacific Northwest Emergency Management Arrangement | |
| Pacific States Marine Fisheries Compact | 1947 |
| Physical Therapy Licensure Compact | 2017 |
| Psychology Interjurisdictional Compact | 2022 |
| Social Work Compact | 2024 |
| State Authorization Reciprocity Agreement | 2014 |
| Streamlined Sales Tax Agreement | 2008 |
| Uniform Unclaimed Property Act | 1997 |
| Western Interstate Corrections Compact | 1959 |
| Western Interstate Nuclear Compact | 1977 |
| Western Regional Education Compact | 1955 |
| Wildlife Violator Compact | 1993 |