A Private Affair cast is including:
Aura Garrido as Marina Quiroga (8 episodes), Jean Reno as Héctor (8 episodes), Ángela Molina as Doña Asunción (8 episodes), Pablo Molinero as Arturo Quiroga (8 episodes), Álex García as Andrés Castaño (8 episodes), Gorka Otxoa as Pablo Zarco (8 episodes), Toño Casais as Morais (8 episodes), Iván López as Ramón (2 episodes), Abian Padrón as Cándido (1 episode), Nerea Portela as Dependienta Galerías (1 episode), Monti Castiñeiras as Alfonso Quiroga (1 episode), Cayetana Campos as Marina Niña (1 episode)