The National Olympiad in Informatics in computing usually refers to the a national competition of a particular country, which usually is the course of selection of the country's top team or persons to participate in the International Olympiad in Informatics. Some national competitions are:
- Philippines : National Olympiad in Informatics - Philippines [1]
- Vietnam: : Template:Ill
- China : Template:Ill
- Singapore : National Olympiad in Informatics, Singapore [2]
- Greece : National Greek Competition in Informatics [3]