"A Complete Semiotic Study of Selected Telecommunication Billboard Ads in Nigeria" is a five-chapter research work designed with a view to:- identifying and analysing semiotic variables in the selected telecommunication billboard advertisements;- discussing deep and surface structures of visual images in the selected billboard advertisements; and- showing the effectiveness of semiotic tools in the selected telecommunication billboard advertisements.Three theoretical frameworks were deployed in the study. The research design adopted was descriptive content analysis. Data was collected from eight selected telecommunication billboard advertisements for in-depth discussion and argumentation.