In 2017, Tongan citizens holding regular Tongan passports had visa-free or visa on arrival access to 111 countries and territories, ranking the Tongan passport 47th in the world according to the Visa Restrictions Index.
[1] Tonga signed a mutual visa waiver agreement with Schengen Area countries on 20 November 2015.
[2] Tongan Protected Person passports were sold by the King of Tonga to persons who are not a Tongan citizen.
Generally, those holders are refugees, stateless persons, and individuals who for political reasons do not have access to any other passport-issuing authority.
Some countries/regions, e.g., Hong Kong, do not recognize the Tongan Protected Person passport as a legitimate travel document, and refuse entry to the holder attempting to enter on this passport.