臺語文，或者叫做臺語白話文、臺文，係一種符合並融合臺灣話語法、本身詞彙同埋外來詞彙嘅書寫系統，主要流行於臺灣、福建、廣東一帶、新加坡同埋馬來西亞。傳統嘅臺語文型式係由傳統漢字同臺閩漢字一同行文所組成嘅；近代以來，隨住傳教士來到東亞，為咗傳教需要另外發展出一套以羅馬字為書寫文字嘅白話字（後來臺灣教育部又另製一套高度對應嘅臺羅字）。兩者都係今日臺語文書寫上嘅優勢系統，甚至以兩者一同行文而產生咗漢羅混寫的書寫模式。由於母語讀寫教育嘅缺乏，使用臺灣話嘅臺灣人有九成以上係臺語文文盲或者半文盲而且唔自知；因此，臺灣人喺報章、媒體同網絡上成日用現代標準漢語音義相近嘅字詞來書寫母語，導致產生咗好多錯別字。
Taiwanese language, perhaps called Taiwanese vernacular and Taiwanese, is a writing system that conforms to and integrates Taiwan's discourse, its own vocabulary and foreign words, and is mainly popular in Taiwan, Fujian, Guangdong, Singapore and Malaysia. In modern times, with the arrival of missionaries in East Asia, a set of vernacular characters written in Romaji was developed for missionary needs (later the Ministry of Education of Taiwan produced another set of highly corresponding Tailuo characters). Both of them are the dominant systems in today's Taiwanese writing, and even the writing mode of Hanluo mixed writing was produced by the two of them in the same article. Due to the lack of literacy education in the mother tongue, more than ninety percent of the Taiwan who use Taiwan dialect are illiterate or semi-literate in Taiwanese and do not know it Taiwan.