Taa , also known as ǃXóõ (also spelled ǃKhong and ǃXoon; Taa pronunciation: [ǃ͡χɔ̃ː˦]), is a Tuu language notable for its large number of phonemes, perhaps the largest in the world. It is also notable for having perhaps the heaviest functional load of click consonants, with one count finding that 82% of basic vocabulary items started with a click. Most speakers live in Botswana, but a few hundred live in Namibia. The people call themselves ǃXoon (pl. ǃXooŋake) or ʼNǀohan (pl. Nǀumde), depending on the dialect they speak. The Tuu languages are one of the three traditional language families that make up the Khoisan languages.

Taa is the word for 'human being'; the local name of the language is Taa ǂaan (Tâa ǂâã), from ǂaan 'language'. ǃXoon (ǃXóõ) is an ethnonym used at opposite ends of the Taa-speaking area, but not by Taa speakers in between. Most living Taa speakers are ethnic ǃXoon (plural ǃXooŋake) or 'Nǀohan (plural Nǀumde).

Taa shares a number of characteristic features with West ǂʼAmkoe and Gǀui, which together are considered part of the Kalahari Basin sprachbund.