Baron Frédéric Joseph Vandemeulebroek (often spelled Van de Meulebroeck; 17 November 1876 – 14 December 1958) was a Belgian liberal politician and mayor of the City of Brussels between 1939 and 1942 and again between 1944 and 1956.

On his death-bed in October 1958, he married his long-term companion Louisa Degueldre (1898–1985), with whom he had had a son, Jacques, who had been born in Ixelles in 1932.

He addressed the population in a "Proclamation" poster, which stated that "Contrary to what has been said, I have neither abandoned my post nor submitted my resignation.

Returning to his office in the town hall, he opened the window and symbolically threw his cushion, sullied by the previous occupant, onto the Grand-Place.

As a result of his declining health, Joseph Vandemeulebroek submitted his resignation of the position of mayor which was accepted on 13 February 1956.