Ria Oomen-Ruijten (born 6 September 1950 in Echt, Limburg) is a Dutch politician of the Christian Democratic Appeal (CDA) who has been serving as a member of the Senate since 9 June 2015.
Oomen is a former Member of the European Parliament. As an MEP, she was a member of the bureau of the European People's Party (Christian Democrats) group, she was a member of the European Parliament's Committee on Foreign Affairs, and a substitute member of the Committee on Employment and Social Affairs.
Previously, she was a member of the House of Representatives (June 1981 – September 1989). She dealt mainly with social affairs.
From May 1985, she was chair of The Dutch Foundation for Consumer Complaints Boards (De Geschillencommissie). The Foundation deals with consumer complaints and complaints between enterprises. From January 2013 Hein Blocks succeeded her as chair.