Tagalog can mean:
- The Tagalog language, the most widely-spoken of the Philippine languages.
- The Tagalog people, the second largest Filipino ethnic group.
- The ancient Philippine script known as Baybayin, called Tagalog script in Unicode.
- Batangas Tagalog is a variation of the Tagalog language spoken in Southern Luzon.
- Barong Tagalog, Philippine national clothing.