| Cynthia Ortega | |
| Office: | Member of the House of Representatives (Netherlands) |
| Term Start: | 30 November 2006 |
| Term End: | 19 September 2012 |
| Birth Date: | 9 February 1956 |
| Birth Place: | Willemstad, Curaçao |
| Birthname: | Cynthia Apolonia Martijn |
| Nationality: | Dutch |
| Party: | ChristianUnion (ChristenUnie - CU) |
| Spouse: | Married |
| Residence: | Rotterdam, Netherlands |
| Alma Mater: | ? (BSc, Labour market and Human resource policies), Open University in the Netherlands (MSc, Human resource management) |
| Occupation: | Politician, civil servant |
| Website: | ChristianUnion website |
Cynthia Apolonia Ortega-Martijn (born 9 February 1956 in Willemstad, Curaçao) is a former Dutch politician. As a member of the ChristianUnion (ChristenUnie) she was an MP from November 30, 2006, to September 19, 2012. She focused on matters of economical affairs, social affairs, employment, integration, housing and Netherlands Antilles affairs.
Ortega obtained a bachelor's degree in labour market policies and human resource policies. At the Open University in the Netherlands she obtained a master's degree in human resource management.