Tagalog may refer to:
Language Tagalog language, a language spoken in the Philippines Old Tagalog, an archaic form of the language Batangas Tagalog, a dialect of the language Tagalog script, the writing system historically used for Tagalog, also known as Baybayin Tagalog (Unicode block), character encodings for computers
Other Tagalog people, a major ethnic group in the Philippines Southern Tagalog, a region in southern Luzon that is the heartland of the Tagalog people Tagalog Republic or Katagalugan, revolutionary governments during the Philippine Revolution Tagalog War, another name for the Philippine Revolution Tagalog Insurgency, another name for the Philippine–American War Tagalog (beetle), a genus of beetles in the subfamily Prioninae