Arnoldo Ferreto Segura was a Costa Rican politician and a leader of the Popular Vanguard Party.
[1][2] He grew up in Heredia Centro, where he graduated from the Escuela Normal de Costa Rica and went on to work as a teacher.
[2] For sixteen years, Ferreto Segura was member of the Heredia municipal council.
Along with Humberto Vargas Carbonell, Ferreto Segura led a purge of the followers of Manuel Mora Valverde.
[5] Ferreto Segura and Vargas Carbonell represented a more hard-line position than the older leadership.