Maryland

Wildlife Violator Compact (Joined 1999)
Washington Metropolitan Area Transit Regulation Compact (Joined 1959)
Washington Metropolitan Area Transity Authority Compact (Joined 1965)
Washington Metrorail Safety Commission (Joined 2017)
Virginia-Maryland Boundary Agreement of 1878 (Joined 1878)
Uniform Unclaimed Property Act (Joined 1966)
Susquehanna River Basin Compact (Joined 1967)
Southern States Energy Compact (Joined 1957)
State Authorization Reciprocity Agreement (Joined 2016)
Southern Regional Education Compact (Joined 1949)
Social Work Compact (Joined 2025)
Psychology Interjurisdictional Compact (Joined 2021)
Potomac River Basin Interstate Compact (Joined 1939)
Potomac River Bridges Towing Compact (Joined 1991)
Potomac River Compact of 1958 (Joined 1959)
Potomac Highlands Airport Authority Compact (Joined 1976)
Physical Therapy Licensure Compact (Joined 2019)
Occupational Therapy Licensure Compact (Joined 2021)
Nurse Licensure Compact (Joined 2017)
Nonresident Violator Compact (Joined 1979)
New England Interstate Corrections Compact (Joined 1973)
National Popular Vote Interstate Compact (Joined 2007)
National Crime Prevention and Privacy Compact (Joined 2005)
Middle Atlantic Forest Fire Protection Compact (Joined 1956)
Maryland and Virginia Boundary Agreement (Black-Jenkins Award 1877) (Joined 1877)
Maryland and Virginia Compact of 1785 (Joined 1785)
Jennings Randolph Lake Project Compact (Joined 1994)
Interstate Mining Compact (Joined 1973)
Interstate Medical Licensure Compact (Joined 2018)
Interstate Library Compact (Joined 1973)
Interstate Insurance Product Regulation Compact (Joined 2009)
Interstate Compact to Conserve Oil and Gas (Joined 1959)
Interstate Compact on the Placement of Children (Joined 1975)
Interstate Compact on Licensure of Participants in Horse Racing with Pari-Mutuel Wagering (Joined 2002)
Interstate Compact on Educational Opportunity for Military Children (Joined 2009)
Interstate Compact on Adoption and Medical Assistance
Interstate Compact for the Placement of Children (Joined 2017)
Interstate Compact for Juveniles (Joined 1966)
Interstate Compact for Adult Offender Supervision (Joined 2001)
Interstate Anti-Doping and Drug Testing Standards Compact (Joined 2018)
Interstate Agreement on Qualifications of Educational Personnel (Joined 1968)
Interstate Agreement on Detainers (Joined 1965)
Emergency Management Assistance Compact (Joined 1996)
Driver License Compact (Joined 1987)
Counseling Compact (Joined 2021)
Cosmetology Compact (Joined 2024)
Compact on Mental Health (Joined 1962)
Compact for Education (Joined 1965)
Chesapeake Bay Compact (Joined 1980)
Audiology and Speech Language Pathology Interstate Compact (Joined 2021)
Atlantic States Marine Fisheries Compact (Joined 1941)
Appalachian States Low-Level Radioactive Waste Compact (Joined 1986)