Baby Aline Vargas - Alfonso (born December 5, 1962) in Abulug, Cagayan) is a Filipina politician who currently serves as the representative of Cagayan's 2nd District since 2022 and previously from 2011 to 2019.

[2] After her father died on July 22, 2010, she successfully ran for Congress in a special election in 2011 to finish his term.

In Congress, Vargas-Alfonso was accused of being one of sources of fake SARO (Special Allotment Release Order) forms.

[3] In 2019, Vargas-Alfonso finished her three consecutive terms as Congresswoman from Cagayan's Second District.

[5]' In 2024, Vargas-Alfonso filed her candidacy to run for governor of Cagayan in the 2025 Philippine general election but subsequently withdrew and ran instead for another term in Congress.