XL
- 40 (number)
- Buzz Lightyear of Star Command
- Excel (disambiguation)
- Excel Esports
- Excess-of-loss reinsurance
- LAN Ecuador
- North Texas Intermediate Sanctions Facility
- Weather Star XL
- XL (programming language)
- XL Airways France
- XL Airways Germany
- XL Airways UK
- XL Axiata
- XL Center
- XL Cola
- XL Group
- XL Leisure Group
- XL Recordings