The German and French passports remain in third place going into 2019 with their visa-free citizens being allowed to go to 188 countries.
In joint fourth are the passports of Denmark, Finland, Italy and Sweden on 187 countries followed by Luxembourg and Spain on 186 countries.
UK and US passports have dropped from fifth in 2018 and are both in sixth place now on 185 countries.
The UK and US share sixth place with the Austrian, Dutch, Norwegian, Portuguese and Swiss passports.
Henley Passport Index power ranking:
1. Japan - 190 (destinations)
2. Singapore, South Korea - 189
3. France, Germany - 188
4. Denmark, Finland, Italy, Sweden - 187
5. Luxembourg, Spain - 186
6. Austria, Netherlands, Norway, Portugal, Switzerland, UK and US - 186
7. Belgium, Canada, Greece, Ireland - 184
8. Czech Republic - 183
9. Malta - 182
10. Australia, Iceland, New Zealand - 181