Mark Demesmaeker is a Belgian politician affiliated to the New Flemish Alliance (N-VA) and member of the European Parliament active in the European Conservatives and Reformists group.
In the European Parliament Demesmaeker is a full member of the Committee on Foreign Affairs and a substitute member of the Committee on the Environment, Public Health and Food Safety, where he focuses on biodiversity (rapporteur) and circular economy (ECR shadow rapporteur). He also sits on the subcommittee on Human Rights, where he is the coordinator for the ECR group.