Two-dimensional (2D) materials are interesting candidates for usage in optical coatings. The offer a natural access for the control of coating geometries down to the atomic scale. The set of 2D-materials, which is available for optical applications, spans dielectrics, semiconductors and (semi-)metals; but with sometimes vastly different properties from their bulk counterparts. In this talk I will present functionalized optical coatings consisting of 2D-materials but also functionalized optical coatings embedded with 2D-materials. I will discuss their specific properties, focusing on the development of excitonic systems and on highly nonlinear optical coatings for wavelength conversion and quantum light sources.