Alissa Carolyn Keny-Guyer (born May 20, 1959) is an American politician and a Democratic member of the Oregon House of Representatives who represented District 46 (parts of SE and NE Portland) since her September 27, 2011 appointment by the Multnomah County Board of Commissioners to fill the vacancy caused by the resignation of Ben Cannon.^[2]

Over nearly a decade in the Oregon House, Keny-Guyer chaired the House Committee on Human Services & Housing and served on the House Committees on Health Care (vice chair), Revenue, Early Childhood & Family Supports, Consumer Protection & Government Efficiency (interim chair), Energy/Environment/Water, and the Joint Ways & Means Subcommittee on Human Services.

She also served on the Governor's Children's Cabinet, on the Oregon Children’s Integrated Data (OCID) program oversight, and as Assistant Majority Leader for the Oregon House Democrats.

Keny-Guyer earned her BA in human biology from Stanford University and her MPH from the University of Hawaii at Manoa.

Keny-Guyer won her 2012, 2014, 2016, and 2018 Democratic primary and general elections unopposed. In Oregon's fusion voting system that allows nominations from up to three parties, she was nominated by the Democratic, Working Families, and Independent parties in 2014, 2016 and 2018, and the Democratic, Working Families, and Republican parties in 2012.