This article deals with a set of discourse markers (DM) related to the notion of “truth” in four languages: French, Khmer, Russian and Vietnamese. It is divided into three parts. The first one argues that a “truth” DM specifies the sequence forming the DM scope (noted p) as appropriate to account for what is meant to be said about what is in question. The second one is a description of each DM under scrutiny from a double point of view: that of the type of DM it comes under (whether point of view DM, categorizing DM or DM particle) ; and that of the semantic value of the items composing the DM, which sets up the singularity of each DM in the four languages. The third part describes the values of the various DMs in each language.