- WLI (Water-Level Indicator)
- WLIA (Wisconsin Land Information Association)
- WLID (World Learning for International Development)
- WLIG (Worcestershire Leisure Instruction & Gyms)
- WLiiA (Whose Line is it Anyway)
- WLIN (Washington Legal Internet News)
- WLIP (Wisconsin Land Information Program)
- WLJ (World Leisure Jobs & News)
- WLK (Selawik Airport)
- WLKA (Army of Occupation radio station, Kanoya, Japan)
- WLKB (Army of Occupation radio station, Oita-Beppu, Japan)
- WLKC (West London Korfball Club)
- WLKD (Army of Occupation radio station, Sapporo, Japan)
- WLKE (Army of Occupation radio station, Sendai, Japan)
- WLKF (Army of Occupation radio station, Kumamoto, Japan)
- WLKH (Army of Occupation radio station, Kokura, Japan)
- WLKY (Army Of Occupation Radio Station, Shimonisikei, Japan)
- WLL (Wireline Logging)
- WLLA (Westchester Literacy and Learning Alliance)
- WLLB (West Little League Baseball)
- WLM (Prospect Hill Heliport (FAA: MA92))
- WLME (World's Largest Math Event)
- WLMF (Workload License Migration and Monitor Facility)
- WLMK (We Love Mrs. Kelley)
- WLMM (Windows Live Movie Maker)
- WLMP (Wholesale Logistics Modernization Program)
- wln (Walloon language (ISO 639-2 code))
- WLNB (WARLORD Notebook computer)
- WLO (Waterloo Airport)
- WLOA (World Light Olefins Analysis)
- WLOC (Workout & Leisure in Oxfordshire County)
- WLOD (Win, Lose, or Draw)
- WLOG (Without Loss Of Generality (see WOLOG))