The MCAT is only required by schools in the US / Canada (Caribbean and some English medical school programs in Ireland, Australia and Europe). It is only administered in English.
Before you start booking tickets to go to other countries, I'd strongly recommend you log-in to the portal every day and check for seats. Many seats are likely to open up. While I'm studying for a re-take, I have applied to med school and would drop my seat if admitted. I know several other folks in my situation with a score good enough to apply, but below the 30 threshold warranting a re-take.
Good luck!
P.S. - I forgot Puerto Rico, which requires the MCAT. If the MCAT were offered in Spanish, I suspect the MCAT score of those schools would be much higher. I know a PI I worked with said she took the MCAT in Puerto Rico before she knew proper English and did terribly on it.
P.P.S. - I can only imagine going to an exotic land and then realizing that the "Verbal" section is ten times harder because you barely understood them in English, but in the foreign language they might as well be Greek to you.
). 
