List of countries in the Own Asiavision Song Contest

Fifty-five countries have participated in the Own Asiavision Song Contest since it started in 2015. The contest, organised by the Own Asia-Pacific Broadcasting Union, is held between members of the Union. Broadcasters from different countries submit songs to the event, and cast votes to determine the most popular in the competition.

Participation in the contest is primarily open to all active member broadcasters of the OABU. To be an active member, broadcasters must be a member of the Own Asia-Pacific Broadcasting Union. Eligibility to participate is determined by geographic inclusion within the continent of Asia and Oceania.

The number of countries participating each edition has grown steadily. A record 53 countries participated in the twenty-forth edition. As the number of contestants has risen, preliminary competitions have been introduced, to ensure that as many countries as possible get the chance to compete. In the tenth edition, a semi-final was introduced. The 10 highest-placed countries in the previous edition qualified for the final. All other countries entered the semi-final. The countries qualified from the semi, leaving a final of twenty-four and then twenty-five countries. Since the fourteenth edition, two semi-finals are held with all countries, except the host country and the Big Five, participating in one of the semi-finals. In the twenty-forth edition, a quarter-final was introduced. The 5 lowest-placed countries from each semi-finals in the previous edition have to participate in the quarter-final.

Some countries, such as Australia, Laos, Malaysia and Thailand have entered most editions, while Kiribati has only entered twice. Niue, a country without an eligible television service, tried unsuccessfully to enter in Own Asiavision Song Contest 21.

Participants
The following table lists the countries that are eligible to participate in the contest.
 * Table key
 * Inactive – Countries which participated in the past but did not appear in the most recent contest, or will not appear in the upcoming contest
 * Ineligible – Countries whose broadcasters have been suspended from the Own Asia-Pacific Broadcasting Union and are therefore ineligible to participate

Unsuccessful attempts to participate
There have been several unsuccessful attempts to participate in the Own Asiavision Song Contest. For broadcasters to participate, they must be a member of the OABU and register their intention to compete before the deadline specified in the rules of that edition. Each participating broadcaster pays a fee towards the organisation of the contest. Should a country withdraw from the contest after the deadline, they will still need to pay these fees, and may also incur a fine or temporary ban.

Niue
has never participated in the Own Asiavision Song Contest.

In September 2019, Broadcasting Corporation of Niue (BCN) attempted to gain OABU membership and thus participate independently and make their debut in the Own Asiavision Song Contest 21. A Niuean entry was selected to compete in the contest – Tommy Nee and "Feel" would have been the country's first entry. The entry was rejected from competing as the broadcaster cannot obtain OABU membership due to the island being a constituent territory of New Zealand.

Mali
has never participated in the Own Asiavision Song Contest.

On 1 July 2020, it was announced that the country would make its debut in the 24th edition. The application was rejected immediately as the country is not a member of the OABU. Some fans also expressed their disagreement for a Malian participation as the country is located in Africa. Later the same day it was confirmed that there had been a confusion and the broadcaster intended to confirm its participation in the Own Africavision Song Contest 2 instead.

Other countries
Three countries — Federated States of Micronesia, Nauru and Palau— could still participate, but their broadcasters are not members of Own Asia-Pacific Broadcasting Union.

Other countries, which are geographically located in Asia, cannot apply for membership because they are already members of Own European Broadcasting Union. These countries are Armenia, Azerbaijan, Georgia, Israel, Kazakhstan, Lebanon, Russia and Turkey.