通用表意文字（拉丁语术语为characteristica universalis；英语当中常解释为 universal characteristic 或 universal character；中文之中又常常称为普遍表意文字、普遍语言、通用语言、普适语言以及普适科学语言等），是德国哲学家戈特弗里德·莱布尼茨所设想的一种通用的形式化语言；该语言能够表达数学、科学以及形而上学（纯粹哲学）方面的概念。莱布尼茨希望创建的是一种可以在通用逻辑运算或者说框架之下加以使用的语言。

參考文獻

On Leibniz's lifelong interest in the characteristica and the like, see the following texts in Loemker (1969): 165–66, 192–95, 221–28, 248–50, and 654–66. On the characteristica, see Rutherford (1995) and the still-classic discussion in Couturat (1901: chpts. 3,4). Also relevant to the characteristica is Mates's (1986: 183–88) discussion of what he called the lingua philosophica.

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外部連結
Corazzon, Raul, 2010, "Language as Calculus vs. Language as Universal Medium ". Includes bibliography, links to online papers, and passages from the writings of Jaakko Hintikka and Jean van Heijenoort.
 Rotha, Paul, 1946, "From Hieroglyphs to Isotypes ".
Smith, Barry, 1978, "" Grazer Philosophische Studien 6: 39–62.
—, 1990, "" in K. Mulligan, ed., Language, Truth and Ontology'', (Philosophical Studies Series). Kluwer: 50–81.

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