Elections were held in Cagayan Valley 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.
Batanes.
Henedina Abad is the incumbent.
! scope="col" colspan="2" style="width: 15em" |Party
! scope="col" style="width: 17em" |Candidate
! scope="col" style="width: 5em" |Votes
! scope="col" style="width: 3.5em" |%
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! scope="row" colspan="3" style="text-align: right; margin-right: 0.5em" | Margin of victory
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! colspan="3" style="text-align:right;" | Invalid or blank votes
! colspan="3" style="text-align:right;" | Total votes
Cagayan.
1st District.
Incumbent Salvacion Ponce Enrile is not running. Her husband former Representative Jack Enrile is her party's nominee.
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! scope="col" style="width: 17em" |Candidate
! scope="col" style="width: 5em" |Votes
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! scope="row" colspan="3" style="text-align: right; margin-right: 0.5em" | Margin of victory
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! colspan="3" style="text-align:right;" | Invalid or blank votes
! colspan="3" style="text-align:right;" | Total votes
2nd District.
Baby Aline Vargas-Alfonso is the incumbent.
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! colspan="3" style="text-align:right;" | Invalid or blank votes
! colspan="3" style="text-align:right;" | Total votes
3rd District.
Randolph Ting is the incumbent.
! scope="col" colspan="2" style="width: 15em" |Party
! scope="col" style="width: 17em" |Candidate
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! scope="col" style="width: 3.5em" |%
! scope="row" colspan="3" style="text-align: right; margin-right: 0.5em" | Margin of victory
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! colspan="3" style="text-align:right;" | Invalid or blank votes
! colspan="3" style="text-align:right;" | Total votes
Isabela.
1st District.
Incumbent Rodolfo Albano III is running.
! scope="col" colspan="2" style="width: 15em" |Party
! scope="col" style="width: 17em" |Candidate
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! scope="row" colspan="3" style="text-align: right; margin-right: 0.5em" | Margin of victory
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! colspan="3" style="text-align:right;" | Invalid or blank votes
! colspan="3" style="text-align:right;" | Total votes
2nd District.
Ana Cristina Go is the incumbent. She changed her party affiliation from Nacionalista to Liberal.
! scope="col" colspan="2" style="width: 15em" |Party
! scope="col" style="width: 17em" |Candidate
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! scope="row" colspan="3" style="text-align: right; margin-right: 0.5em" | Margin of victory
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! colspan="3" style="text-align:right;" | Invalid or blank votes
! colspan="3" style="text-align:right;" | Total votes
3rd District.
Napoleon Dy is the incumbent and is running unopposed.
! scope="col" colspan="2" style="width: 15em" |Party
! scope="col" style="width: 17em" |Candidate
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! scope="row" colspan="3" style="text-align: right; margin-right: 0.5em" | Margin of victory
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! colspan="3" style="text-align:right;" | Invalid or blank votes
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4th District.
Giorgidi Aggabao is term limited.
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! scope="row" colspan="3" style="text-align: right; margin-right: 0.5em" | Margin of victory
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! colspan="3" style="text-align:right;" | Invalid or blank votes
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Nueva Vizcaya.
Incumbent Carlos M. Padilla is term-limited and is running for Governor. His wife, incumbent Governor Ruth Padilla is his party's nominee.
! scope="col" colspan="2" style="width: 15em" |Party
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! scope="row" colspan="3" style="text-align: right; margin-right: 0.5em" | Margin of victory
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! colspan="3" style="text-align:right;" | Invalid or blank votes
! colspan="3" style="text-align:right;" | Total votes
Quirino.
Incumbent Dakila Carlo Cua is running unopposed.
! scope="col" colspan="2" style="width: 15em" |Party
! scope="col" style="width: 17em" |Candidate
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! colspan="3" style="text-align:right;" | Invalid or blank votes
! colspan="3" style="text-align:right;" | Total votes
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References.
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