The 2024 Oregon State Senate election was held in the U.S. state of Oregon on November 5, 2024, to elect 15 of the 30 members of the State Senate to the 83rd Oregon Legislature.
Primary elections were held in several districts on May 21, 2024. The election coincided with the election of the other house of the Legislative Assembly, the Oregon House of Representatives, and other elections.
The Democrats regained the three-fifths supermajority in the Senate they had lost in the 2022 elections.
On August 8, 2023, Oregon Secretary of State LaVonne Griffin-Valade announced that as per the recently passed Oregon Ballot Measure 113, 10 Republican senators who participated in walkouts earlier in the year are not eligible for re-election for the next term. Six of these senators are up for election in 2024. Some of the senators filed a lawsuit against the secretary of state, with the Oregon Supreme Court eventually ruling unanimously that they could not be placed on the ballot in 2024 and 2026.
The 15 members of the Senate up for election were elected from single-member districts via first-past-the-post voting for four-year terms.
Contested nominations of recognized major parties (Democratic and Republican) for each district were determined by a primary election on May 21, 2024.
Minor party candidates were nominated by petition. Write-in candidates must file a request with the Secretary of State's office for votes for them to be counted. Candidates for the state Senate in 2024 were required to file to run from September 14, 2023, to March 12, 2024.