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 (beetle), ''Tagalog'' (beetle), a genus of beetles in the subfamily Prioninae {{disambiguation Language and nationality disambiguation pages