BASIN stands for Building Advisory Service and Information Network (Europe)
BASIN stands for Boulder Area Sustainability Information Network (Boulder, Colorado)
BASIN stands for Biosphere Atmosphere Stable Isotope Network
BASIN stands for Brothers And Sisters In Need
BASIN stands for Bundesweites Alternatives Studentisches Informations-Netzwerk (German: Nationwide Alternative Student Information Network)
BASIN stands for Barriers to Assertive Skills in Nurses (nursing)