According to latest statistics of Henley Passport Index 2018 released on May 23, Vietnam ranks 84th among the most powerful passports in the world with 51 visa-free destinations.
Japan surpasses Singapore to top the global ranking, offering its citizens visa-free or visa-on-arrival access to a record 189 destinations.
The Singapore passport ranks second place, tied with Germany, with a total of 188 destinations accessible without a prior visa.
The third places go to the Republic of Korea, Finland, France, Italy, Spain and Sweden, while the US and UK are at fourth places.
According to The Straits Times of Singapore, the Henley Passport Index is formulated based on data from the International Air Transport Association, which maintains the world's largest database of travel information
The index surveyed a total of 199 different passports against 227 different travel destinations, including countries, territories, and micro-states.