To provide an adhesive composition for use in preventing the reveal of personal information or the like, which prevents the printed personal information from being read out.

This adhesive composition for information concealment comprises a coloring agent, an adhesive resin, and an organic solvent and/or water which is capable of dissolving or dispersing the adhesive resin, wherein the Y value of a coated film applied to a white part of a hiding-chart (JIS K 5600) using a 25 m applicator is 10%.