Voltaire Tuvera Gazmin (born 22 October 1944 in Moncada, Tarlac) is a retired Filipino soldier who was the 35th Secretary of the Department of National Defense of the Philippines.

He first gained national prominence in 1986 as the loyal and disciplinarian Commander of the Presidential Security Group (PSG), defiantly defending the government of President Corazon C. Aquino from seven 'coup attempts during her six-year term.

Gazmin was honored multiple times in his military career for his skills in intelligence gathering and effectively commanding troops in some of the most difficult operations and for a long-term vision in administrative matters.

He first became Team Leader of the Home Defense Forces Group (Airborne) at the Army Special Warfare Brigade based in Fort Magsaysay, Nueva Ecija province.

Gazmin would earn his first star and hold the title Brigadier General after nearly six years of distinguished service as Commander of the Presidential Security Group.

When Ferdinand Marcos, the 10th president of the Philippines, declared martial law on September 21, 1972, Senator Aquino and several high-ranking politicians from the opposition were arrested and imprisoned.

During Senator Aquino's 40-day hunger strike, Gazmin would secretly bring milk to the detention cell and oversee the solon's daily medical check-up.

Gazmin kept close ties to Mrs. Aquino and the rest of her family members while he returned to the Philippine Army and even after he disappeared from public view when he completed his tour of duty as Ambassador to Cambodia in 2004.

On August 1, 2009, the day Aquino died after a year-and-a-half battle against colorectal cancer,[11] Gazmin and several senior military officials who served as her presidential security detail paid their last respects to their former Commander-in-Chief.

The directive would result in controversies against the Aquino government of removing officials appointed by former President Gloria Arroyo to favor a different batch of officers from the Philippine Military Academy.

Senior defense officials and from the Armed Forces of the Philippines announced that they will visit the disputed Kalayaan Group of islands to check possible improvements of the facilities.