Gov. Alfonso D. Tan College (GADTC) started as Tangub City College (TCC) in 1984. It was born during the incumbency of the late Mayor Alfonso D. Tan of Tangub City. By virtue of City Ordinance No.15 entitled “An Ordinance Providing for the Establishment and Maintenance of a City College in Tangub City” the college opened its doors on June 1, 1984 to more than 200 pioneering students.

Later on 1992, under the term of Gov. Philip T. Tan, nephew of GADTC founder, TCC turned into Gov. Alfonso D. Tan Memorial College (GADTMC). He vowed to improve the College’s facilities and to raise the standards of the school. Its third transition marked on 2003 under the governance of Mayor Jennifer Wee-Tan from GADTMC to Alfonso D. Tan College (ADTC). Afterwards, in 2007 in the same administration it changed into Gov. Alfonso D. Tan College (GADTC).

At the present the college still bears the name – Gov. Alfonso D. Tan College, stamped in its wavering green flag which emblematize its excellence and pride with myriads of accomplishments achieved. GADTC continue to uplift the life of each individual, building their dreams and realizing their visions to be the light of the world.