The Singapore-Cambridge General Certificate of Education Ordinary Level (or Singapore-Cambridge GCE O-Level) is a GCE Ordinary Level examination held annually in Singapore and is jointly conducted by the Ministry of Education (MOE), Singapore Examinations and Assessment Board (SEAB) and the University of Cambridge Local Examinations Syndicate (UCLES).

Despite the engagement of an identical examination board as partnering authority, the Singapore-Cambridge GCE Ordinary Level examination have no relation to the British GCSE examinations, having de-linked since 2006 when the Ministry of Education (MOE) took over the management of its national examination. This is owing to the stark differences in the development of the respective education systems in the two countries. Nevertheless, the qualification is recognised internationally as equivalent to the International General Certificate of Secondary Education (IGCSE), taken by international candidates including Singaporean students who take the exam as private candidates, as well as the General Certificate of Secondary Education (GCSE) examination taken by students in the United Kingdom.

The national examination is taken by secondary school students at the end of their fourth year (for Express stream) or fifth year (for Normal Academic stream), and is open to private candidates. Recent studies show that approximately 30,000 students take the Singapore-Cambridge GCE O-Level exams annually.