Mario Casas
Cote de Pablo
Rodrigo Santoro
Lou Diamond Phillips
Kate del Castillo
The miners (some of them) and Antonio Banderas
Maria Segovia (she is the sister of one of the miners and is played in the movie by Juliette Binoche)
Golborne (ex secretary at the Piñera goverment, hopefully in jail in a couple of months played in the movie by Rodrigo Santoro)
Cecilia Bolocco (Ex Miss Universe and Ex Argentinian first lady reject)
Polo Ramirez and my queen Tonka Tomicic
Rafael Araneda and Carola de Moras (Viña del Mar's Hosts)
Leonardo Farkas (philanthropist, if you meet him i suggest you ask him for money, food, or change your cheap watch for his.. he will probably do it)
Farkas and one of the miners
Source 1
Source 2