In Belgium, a Lobbies Register has been introduced in 2018 as it is provided for in art. 163ter of the Rules of Procedure of the Belgian House of Representatives. 

Persons supposed to represent specialized consultancies, law firms and self-employed consultants,  “in-house lobbyists”, trade unions and professional associations, non-governmental associations, think tanks, and research and academic institutions, organisations representing churches and religious communities, organisations representing local, regional and municipal authorities, or other public or mixed entities, who exercise activities that are carried out with the objective of directly or indirectly influencing the policy-making or the implementation of policies or the decision-making processes of the House must sign the Lobbies register, which is public, published on the internet site of the House, and managed by a House service designated to this end.

Registrants are required to provide the register their personal identification data, information and contacts of the organization they work for and the client they are representing.

By registering, lobbyists agree to act in compliance with the code of conduct annexed to the Rules of procedure.