Elections were held in Ilocos Region for seats in the House of Representatives of the Philippines on May 9, 2016.
The candidate with the most votes won that district's seat for the 17th Congress of the Philippines.
| Party | width=80px | Popular vote ! | width=50px | % ! | width=60px | Swing ! | width=40px | Seats won ! | width=45px | Change | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 970,464 | 6 | 4 | |||||||||
| 573,411 | 3 | 3 | |||||||||
| 217,775 | 2 | ||||||||||
| 133,381 | 1 | 1 | |||||||||
| 120,960 | 0 | ||||||||||
| 60,197 | 0 | 1 | |||||||||
| 40,201 | 0 | ||||||||||
| 24,263 | 0 | ||||||||||
| 1,712 | 0 | ||||||||||
| 0 | 0 | 1 | |||||||||
| align=left colspan=2 | Valid votes | 2,142,364 | 12 | ||||||||
| align=left colspan=2 | Invalid votes | 382,994 | |||||||||
| align=left colspan=2 | Turnout | 2,525,358 | |||||||||
| align=left colspan=2 | Registered voters | ||||||||||
Incumbent Rodolfo Fariñas is running
Imelda Marcos is the incumbent. She changed her party affiliation from KBL to Nacionalista.
Incumbent Ronald Singson is not running. His party nominated incumbent Vice Governor Deogracias Victor Savellano.
Eric Singson is the incumbent.
Incumbent Victor Francisco Ortega is term limited and is running for Mayor of San Fernando City.
Eufranio Eriguel is not running.
Jesus Celeste is the incumbent.
Leopoldo Bataoil is the incumbent. He changed his party affiliation from NPC to Liberal.
Incumbent Gina de Venecia is not running.
Carmen Cojuangco is the incumbent.
Incumbent Marilyn Primicias-Agabas is running unopposed.