SAC can mean:

• S-Allyl cysteine, a chemical constituent of garlic
• SAC Capital Partners, a hedge fund managed by Steven A. Cohen
• SAC programming language
• St. Andrew's College
• School Advisory Council
• School Assesed Coursework in the Victorian Certificate of Education
• Scottish Agricultural College
• Secure authenticated channel
• Senior Aircraftman
• Senior Assistant Commissioner, a rank in the Singapore Police Force
• Simple API for CSS, a way for programmers to work with Cascading Style Sheets
• Sirius Advanced Cybernetics, an image processing company
• Societas Apostolatus Catholici, a religious congregation also known as the Pallottines
• Special Area of Conservation, as laid down by the EU Habitats Directive of May 1992
• Stand Alone Complex
• Statement of Accounting Concepts
• Strategic Air Command
• Strict Avalanche Criterion, a strict definition of the avalanche effect in cryptography
• Student activity center, often found on college campuses
• Student Advisory Council, at Northern Illinois University
• Students' Administrative Council, University of Toronto
• Sukhoi Aviation Corporation
• Superior Art Creations, an underground group of computer art scene enthusiasts
• Sveriges Arbetares Centralorganisation, the Central Organisation of the Workers of Sweden
• Special Administration Console see: Emergency Management Services

Sac can mean:

• Sac (tribe)
• Sacagawea Dollar
• Sacramento

SAC