Mário Viegas Carrascalão (May 12, 1937 – May 19, 2017) was an East Timorese politician and diplomat.
Carrascalão, a founder of the Timorese Democratic Union [UDT) in 1974 and the Social Democratic Party (SDP) in 2000, served as the Governor of East Timor from 1983 to 1992 during the Indonesian occupation of the country.
However, he re-joined the East Timorese government following the 1999 independence referendum and the transition to independence.
He later served as a Deputy Prime Minister within the IV Constitutional Government of then-Prime Minister Xanana Gusmão from 2009 to 2010.