Feliciano Alberto Viera Borges (1872 – 1927) was a Uruguayan political figure.
He was a member of the Colorado Party and closely identified with the liberal former President José Batlle y Ordóñez, who long dominated Uruguayan political life. Prior to becoming President, Viera served Batlle's second government as Interior Minister.
He was President of Uruguay from 1915 to 1919. Among prominent figures who served in his Administration was Baltasar Brum, who occupied the Interior and subsequently the Foreign Affairs ministry.
Uruguay was more closely identified with the Allied cause in World War I than was neighbouring Argentina. On September 8, 1917, Viera received the Grand Cross of the Legion of Honor of France.
In 1919 Viera relinquished the Presidency and was succeeded by Baltasar Brum.
He died in 1927.