Paul-Louis-Marie-Célestin, baron de Favereau (15 January 1856 – 26 September 1922) was a Belgian politician and member of the Catholic Party.

Born in Liège, he became a doctor of law before serving as member of the Belgian Parliament for the arrondissement of Marche-en-Famenne (1884–1900).^[1] On 16 September 1884 he married Marie-Charlotte Frésart (1864–1947), with whom he had Edith-Paul-Adeline-Marie-Joseph-Ernestine-Elisabeth de Favereau, later wife of Charles-Albert d'Aspremont Lynden and mother of Harold Charles d'Aspremont Lynden.^[2]

De Favereau also became Foreign Minister (1896–1907) and senator for the Province of Luxembourg (1900–1922).^[3] He was made a minister of state in 1907. For his last eleven years in the senate he also served as its president. He died at the château de Jenneret.^[4]

• Grand cordon of the Order of Leopold
• Civic Cross, 1st Class
• Commemorative Medal of the Reign of King Leopold II
• Grand Cross of the Order of
  • Saints Maurice and Lazarus (Italy)
  • the Oak Crown (Luxembourg)
  • the Saviour (Greece)
  • the Double Dragon (China)
  • the Polar Star (Sweden)
  • the White Eagle (Poland)
  • the Rising Sun (Japan)
  • the Villa Vicosa (Portugal)
  • the White Elephant (Siam)
  • the Lion and the Sun (Persia)
  • the Légion d’honneur (France)
  • Osmanieh (Turkey)
  • Pius IX (Papal States)