PSL

• Pakistan Super League, a Twenty20 cricket league in Pakistan
• Philippine Super Liga, a professional volleyball league in the Philippines
• Pilipinas Super League, a professional basketball league in the Philippines
• Philippine Swimming League
• Premier Soccer League, in South Africa
• Premier Squash League, a professional squash competition in England

• Personal Seat License, used to get season tickets at sports stadiums
• Personal Stop Loss
• Process Specification Language

• Portable Standard Lisp
• Probabilistic soft logic
• Profile Scripting Language
• Property Specification Language
• Public Suffix List

• Left Socialist Party (Belgium) (French: Parti Socialiste de Lutte), a Belgian political party
• Party for Socialism and Liberation, an American political party
• Pioneer Square Labs, a Seattle-based startup studio
• Polish People's Party (Polish: Polskie Stronnictwo Ludowe), a Polish political party
• Productora de Software, a Colombian software development and outsourcing organization
• Université Paris Sciences et Lettres, a French university
• Social Liberal Party (Brazil) (Portuguese: Partido Social Liberal), a Brazilian political party
• Social Liberal Party (Moldova) (Romanian: Partidul Social Liberal), a political party
• Social Liberal Party (Tunisia) (French: Parti social-libéral), a Tunisian political party

• Perth Airport (Scotland), IATA airport code
• Port St. Lucie, Florida
• Port Sunlight railway station, England; National Rail station code PSL

• Percentage of the speed of light
• Photostimulated luminescence
• Polystyrene Latex
• Process Specification Language

• Palestinian Sign Language, sign language used in the Palestinian territories
• Parallel strand lumber, a form of engineered wood
• Professional support lawyer
• PSL (rifle), Romanian designated marksman rifle
• PSL_n, the projective special linear group
• Pumpkin Spice Latte, specifically used by Starbucks Corporation

Psi (disambiguation)