The object of the present invention is to provide a black marker composition capable of forming non-metal marker which sufficiently ensures the adhering strength and the contrast against the foundation; the electronic component comprising the marker made of said black marker composition, and further the communication device comprising said electronic component.The marker composition according to the present invention comprises a borosilicate glass, and a black oxide including Cr, Mn and one or more elements selected from the group consisting of Fe, Ni, Cu and Co.