Robert Alan Hasegawa (born September 22, 1952) is an American labor leader and politician serving as a member of the Washington State Senate, representing the 11th Legislative District since January 2013.

The son of Japanese immigrants, his parents, aunts, uncles, and grandparents were interned by the Federal government of the United States during World War II.

He went on to graduate from Antioch University Seattle with dual concentrations in Labor Relations and Organizational and Social Change.

He holds a Class A-Commercial Drivers License, with endorsements for hazardous material, doubles and triple trailer, tank cargo, non-air brake, and pilot car driving.

He was an executive board member of the King County Labor Council, AFL-CIO representing the transportation trades.

On June 30, 2001, "Bob Hasegawa Day" was proclaimed in honor of his labor activism by Seattle Mayor Paul Schell and King County Executive Ron Sims.

He received an award that was created in honor of the memory of Silme Domingo and Gene Viernes, labor activists who were killed opposing the regime of Ferdinand Marcos.

[11] In 2022 Hasegawa was the primary sponsor of SJM 8006 requesting a federal-state partnership towards the establishment of a universal single-payer healthcare both statewide in Washington and federally.