Spar commonly refers to:

• Spar (sailing), part of a sailing vessel
• Spar (aeronautics), part of an aircraft
• Sparring, mock combat

It may also refer to:

• Spar (retailer), a multinational retailer
• Spar Aerospace, a former Canadian aerospace company
• Spar grocery stores, owned by Pisiffik, Greenland
• NASDAQ symbol for Spartan Motors, US

• USCGC Spar (WLB-403), a former United States Coast Guard seagoing buoy tender
• USCGC Spar (WLB-206), a United States Coast Guard seagoing buoy tender

• SPARS, the United States Coast Guard Women's Reserve
• Society of Professional Audio Recording Services
• Special Program of Assisted Reproduction

• Spar (mineralogy), a crystal with readily discernible faces
• Spar (platform), a type of floating oil platform
• Spar (tree), part of a cable logging setup
• Spar Island (Rhode Island), a sandbar
• "Spar" (short story), by Kij Johnson
• Debora Spar

• All pages with titles beginning with spar
• All pages with titles containing spar
• SPARS code, a code on some compact disc recordings