Antonio "Tony" J. Fas Alzamora (born November 16, 1948) is a Puerto Rican politician and Senator.

In March 1973, Fas Alzamora passed the bar exam and began working as an attorney after establishing his own law firm in Cabo Rojo.

Fas Alzamora officially began his political career with the Popular Democratic Party (PPD).

In 2008, Fas Alzamora was elected to his eight term at the Senate and the ninth in the Legislature, tying the record previously set by Rep. Leopoldo Figueroa.

[6] When he was sworn into his 10th consecutive term in the Legislature on January 2, 2013, he became the longest serving legislator in Puerto Rico's history, and was honored as such during the Senate's swearing-in ceremony.

Fas Alzamora is married to Ileana Pacheco Morales, a licensed medical laboratory scientist.