The Carnet Mondain (English: Social Notebook) of Belgium is a directory[1] featuring high society[2][1][3] (nobility and upper bourgeoisie), Belgian or foreign, established in Belgium, as well as members of Belgian families established abroad.

Its tagline is "the Familial and Social Belgium" (French: la Belgique Familiale et Mondaine).

This work, which was an initiative of Prince Charles-Louis of Merode, has the advantage of clearly showing the ties of descent between people (up to two degrees).

This directory coexists with the High Life de Belgique, which pursues similar objectives.

These new applications are then submitted to the Carnet Mondain admissions committee, which rules in full independence.