Nikki Fortunato Bas (born 1968) is an American politician serving on the Alameda County Board of Supervisors for the 5th district. She was previously a member of the Oakland City Council from the 2nd district from 2019 to 2024, serving as the Council President since 2021, and briefly as interim Mayor of Oakland following the recall of Sheng Thao.

Fortunato Bas was born in 1968 in New York to Dr. Mauricio Bas and nurse Fe Fortunato Bas. They immigrated to the United States in the 1960s from Cebu and Mindoro to continue their education. Bas graduated from the University of Virginia, where she earned a Bachelor of Science in economics in 1990, then moved to California.^[1] She is a Democrat.

Fortunato Bas was first elected to the Oakland City Council in 2018, succeeding Abel Guillen. She was sworn in on January 7, 2019, making her the first Filipino-American to hold public office in the city.^[1]

She resigned the position on December 17, 2024, so a successor can be elected in a concurrent special election with the 2025 Oakland mayoral special election.^[2]

A successor will be elected to fill the remainder of the term on April 16, 2025, concurrently with a special election for the Council's 2nd district to succeed Fortunato Bas.

Fortunato Bas narrowly defeated Emeryville City Councilmember John Bauters in the general election.^[3]

Fortunato Bas and her husband, Brad Erickson, faculty union president at San Francisco State University, and their daughter, Balana, live in Oakland.^[1]