Ajmone-Marsan is a surname, and can refer to:
Members of the Ajmone-Marsan family of Italy, including: Marco Ajmone-Marsan (1859–1918), Italian entrepreneur Alessandro Ajmone-Marsan (1884–1941), Italian footballer, elder son of Marco Noemi Ajmone-Marsan (1886–1967), only daughter of Marco Annibale Ajmone-Marsan (1888–1956), Italian footballer, 2nd son of Marco Veniero Ajmone-Marsan (1918–2007), Italian economist, son of Annibale Riccardo Ajmone-Marsan (1889–1958), Italian footballer, 3rd son of Marco Giorgio Ajmone-Marsan (1926–2009), Italian entrepreneur and owner of Magazzini Generali Piemontesi, son of Riccardo Giulia Ajmone-Marsan (1955), Italian journalist and historian, only daughter of Giorgio and daughter of Umberta Nasi