Mathias De Clercq

{{Short description|Flemish politician}}

{{Infobox person

| name =

| image = DeClercq Mathias 04.jpg

| alt = Mathias De Clercq

| caption = Mathias De Clercq

| birth_name = Mathias De Clercq

| birth_date = {{Birth year and age|1981}}

| birth_place = Ghent

| death_date =

| death_place =

| other_names =

| occupation = politician

| years_active =

| known_for = Mayor of Ghent and President of Eurocities

| notable_works =

}}

Mathias Toon Cecil Willy De Clercq, esq.Etat présent de la noblesse belge 2015, p. 63 (born 26 December 1981, Ghent) is a Belgian politician. He is a member of the Flemish liberal party. At the moment he is the mayor of Ghent. From 2007 until 2014,{{Cite web |title=Resultaten verkiezingen - Résultats électoraux |url=https://electionresults.belgium.be/ |access-date=2023-02-17 |website=electionresults.belgium.be}} he was a federal representative, and from 2014 until 2019, he was a Flemish representative. From 2007 until 2019, he was a schepen in Ghent. He belongs to the social liberal wing of his party.

De Clercq was born in Ghent, son of lawyer and alderman Yannick Frans de Clercq (1954), grand officer of the Order of Leopold II.Etat présent de la noblesse belge 2015, p. 63 He is the grandson of Viscount Willy De Clercq, a former European Commissioner.

Since june 2025 is also President of the Eurocities network.{{Cite web |date=2025-06-12 |title=Mathias De Clercq: A city voice for Europe - Eurocities |url=https://eurocities.eu/latest/mathias-de-clercq-a-city-voice-for-europe/ |access-date=2025-06-19 |website=eurocities.eu |language=en-GB}}