Alcantara (May 14, 1935 – December 26, 2014) was a Filipino lawyer and law professor.
He was also the national president of the Social Justice Society, a political party accredited by the Commission on Elections, as well as the founding chairman and president of the ABAKADA-GURO partylist, a partylist group representing teachers.
Alcantara was also a candidate for the 2013 Philippine Senate elections under the Social Justice Society.