Petrus Tun, the first Vice President of the Federated States of Micronesia, was born on March 19, 1936.  He received a BA Degree in Zoology from the University of Hawaii where he also completed a year in post-graduate studies specializing in teaching science at the secondary school level.

Prior to becoming the first Vice President for the FSM, Tun was a classroom teacher and a Principal at Yap Intermediate School. 
Tun was elected to the Congress of Micronesia first in 1966 and was re-elected to the Congress of Micronesia until the newly established FSM Congress was created in 1979.

He was elected to the first FSM Congress in 1979 representing Yap State, and became Vice President during the first FSM Congress.  He was Vice President under President Tosiwo Nakayama’s first term from 1979 until 1983.

After his four year term as Vice President, Tun worked as an advisor to Governor John Mangefel of Yap State from 1983-87, and then in 1987, he was elected as the second Governor of Yap for two terms, until 1991. After his two terms as Governor, he was hired as a Special Consultant to the Governor, under then Governor Vincent Figir, a role he held until his passing in 1999.  During his service as a Consultant to Governor Figir, he was also appointed as Yap State’s representative to the Compact II negotiating team and served as Chairman of the Joint Committee Meeting between the U.S. and the FSM.