Elections were held in the Cagayan Valley 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.
Batanes.
Henedina Abad is the incumbent.
! scope="col" colspan="2" style="width: 130px"|Party
! scope="col" style="width: 17em"|Candidate
! scope="col" style="width: 5em"|Votes
! scope="col" style="width: 3.5em"|%
! scope="col" style="width: 3.5em"| ;templatestyles src="Template:Tooltip/styles.css" / ;±%
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! colspan="3" style="text-align: right; margin-right: 0.5em" | Margin of victory
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! colspan="3" style="text-align:right;" | Total votes
 
! style="text-align:right;" | Swing
Cagayan.
1st District.
Incumbent Jack Enrile is running for the Senate; his wife Salvacion is his party's nominee.
! 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
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2nd District.
Baby Aline Vargas-Alfonso is the incumbent after winning a special election when Florencio Vargas, her father, died. As a result of independent candidate Sherwin Calimag's disqualification, Vargas-Alfonso is running unopposed.
! 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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! colspan="3" style="text-align:right;" | Invalid or blank votes
! colspan="3" style="text-align:right;" | Total votes
 |- style="background-color:#F6F6F6"
3rd District.
Randolph Ting 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
 |- style="background-color:#F6F6F6"
Isabela.
1st District.
Rodolfo Albano Jr. is running for mayor of Cabagan, Isabela. His son, incumbent Vice Governor Rodolfo Albano III is his party's nominee
! 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
 |- style="background-color:#F6F6F6"
2nd District.
Ana Cristina Go 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
 |- style="background-color:#F6F6F6"
3rd District.
Napoleon Dy 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
 |- style="background-color:#F6F6F6"
4th District.
Giorgidi Aggabao 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
 |- style="background-color:#F6F6F6"
Nueva Vizcaya.
Carlos M. Padilla 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
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Quirino.
Incumbent Dakila Carlo Cua is running unopposed.
! 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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! colspan="3" style="text-align:right;" | Invalid or blank votes
! colspan="3" style="text-align:right;" | Total votes
 |- style="background-color:#F6F6F6"
References.
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