Suso Díaz is a Galician historical trade union leader known for his involvement in the naval revolts of 72. Secretary General of CC.OO in Galicia from 1989 to 2000, he was a member of the PCE in hiding.

Younger trade unionists consider him "everyone's grandfather", but he is, above all, the father of Minister Yolanda Dizaz. He is passionate about quiet reading and feels that A Coruña is an unfathomable city.