On 30 March 2023, the Miss International Organization announced that the pageant was scheduled to take place at the Yoyogi National Gymnasium,, instead of the usual Tokyo Dome City Hall, on 26 October 2023.

[3] In the end, contestants from seventy countries and territories were selected to compete in the competition.

[6] This edition marked the debuts of Bangladesh, Lesotho,[3] and Pakistan, and the returns of Angola, Côte D'Ivoire, Equatorial Guinea, Estonia, Ghana, Lithuania, Martinique, Moldova, Myanmar, the Netherlands, Serbia, Sri Lanka, Tunisia, Uganda, and Zimbabwe.

Belarus, Cabo Verde, Germany, Haiti, Honduras, Italy, Kenya, Namibia, the Northern Mariana Islands, Romania, Slovakia, Togo, and Uzbekistan withdrew after their respective organizations failed to hold a national competition or appoint a delegate.

§ – Voted into the Top 15 by the viewers The Miss International Organization introduced several specific changes to the format for this edition.