Trogneux is a French surname. It may refer to:
People with the surname Alain Trogneux (born 1955), French local historian Brigitte Trogneux, later known as Brigitte Macron, First Lady of France
Other Fontaine Trogneux, later known as Fontaine de Charonne, historic fountain in Paris, France Jean Trogneux, French chocolatier, run by five generations of the Trogneux family in Amiens