The historic Oceania DX (“OCDX”) Contest is one of the longest-running contests in the amateur radio calendar, on a par with classics such as the RGSB Commonwealth Contest (formerly BERU) and CQ World Wide DX Contest (CQ WW).

It is an annual competition between radio amateurs to make contacts on the HF (shortwave) bands, specifically DX (long distance) contacts with stations in Oceania.