Swn or SWN can mean:

• Something With Numbers, Australian Band
• Sŵn, a festival
• Southwestern Energy, based on its ticker symbol on the New York Stock Exchange

• 1987-88 Coupe de France
• 1987-88 Courage League
• 1987/88 Courage League
• 1987-88 Cuban National Series
• 1987-88 Cypriot First Division
• 1987-88 Czechoslovak First League
• 1987-88 Detroit Pistons season
• 1987-88 Detroit Red Wings season
• 1987-88 Division 1
• 1987-88 Divizia A
• 1987-88 Duke Blue Devils men's basketball
• 1987-88 Duke Blue Devils men's basketball team
• 1987-88 Edmonton Oilers season
• 1987-88 Ekstraklasa
• 1987-88 Eredivisie
• 1987-88 European Cup
• 1987-88 European Cup Winners' Cup
• 1987-88 FA Cup
• 1987-88 F.C. Internazionale Milano season
• 1987-88 Football Conference
• 1987-88 Football League
• 1987-88 Football League Trophy
• 1987-88 French Division 1
• 1987-88 French Division 2
• 1987-88 Fußball-Bundesliga