Elections were held in the Ilocos Region for seats in the House of Representatives of the Philippines on May 13, 2013.
The candidate with the most votes won that district's seat for the 16th Congress of the Philippines.
Incumbent Ryan Singson is not running; instead, he is for the governorship of Ilocos Sur.
His brother, former Representative Ronald Singson who had resigned in 2011 due to a personal scandal, is his party's nominee.
Incumbent Marilyn Primcias-Agabas is running unopposed after her sole opponent, Brigido Gallano (independent), withdrew.