Estonia

Summary
Name Estonia
Note An international driving permit (IDP) under the 1949 Geneva Convention in the proper format issued by the official agent or agency appointed by Estonia is valid to drive in Japan.On a side note, if you live in another country within EU or the European Economic Area (EEA), there are countries where you can issue international licenses that you can drive in Japan based on Estonia driver's license. (Example: Luxembourg)
I will explain if anybody who has the driver's license issued by Estonia is allowed to drive in Japan.

Yes, all international driving permit (IDP) issued under the 1949 Geneva Convention and the specific format.

To drive a vehicle legally in Japan, you will need a driver's license. The necessary documentation needed to issue a deriver's license does not depend on the driver's Nationality but depends on which country the driver's license is issued from and which country the driver resides in.

Japan is only affiliated with the 1949 Geneva Convention, and Estonia is also affiliated with the 1949 Geneva Convention.

Therefore, if Estonia issues a international driving permit (IDP) under the 1949 Geneva Convention in the proper format, it is valid to drive in Japan.

An international driving permit (IDP) which is not under the 1949 Geneva Convention in the proper format is not valid in Japan.
Please confirm the international driving permit (IDP) is under the 1949 Geneva Convention in the proper format.

The Specifics regrading the format under the 1949 Geneva Convention.
(1)Must be in a small booklet form, not a card type or paper type.
(2)Estonia must recongnize the agent or agency that is issuing the international driving permit (IDP).
(3)The classfication must be from A~E
(4)Must be 18 years old or older.

The validity of the international driving permit is 1 year from the date the permit has been issued, and also 1 year from the date of your arrival in Japan.

Estonia is affiliated with 1968 Vienna Convention. Japan is not affiliated with the 1968 Vienna Convention.
Any international driving permit (IDP) issued under the 1969 Vienna Convention is not valid to drive in Japan.

Japan is only affiliated with the 1949 Geneva Convention, therefore the international driving permit (IDP) issued under the 1949 Geneva Convention is only valid to drive in Japan.

Estonia is a member of the European Economic Area (EEA), but Japan is not.
Therefore, any driver's license issued under EU or EEA is not valid to drive in Japan.

However, if you live in another country within EU or the European Economic Area (EEA), there are countries where you can issue international licenses that you can drive in Japan based on Estonia driver's license. (Example: Luxembourg)

Official Agents to issue international driving permit (IDP)
Estonian Transport Administration

Estonia began issuing International Driving Permits based on the Geneva Convention (1949) in 4 /2021.
Therefore, while it used to be possible to drive in Japan with a Estonia driver's license and a translated document, this is no longer possible.
An International Driving Permit based on the Geneva Convention (1949) is always required.

On the internet, you may come across a fake international driver's license that is presented as if it is valid to drive in Japan.
These fake international driver's license is not valid to drive in Japan.
For more information regarding fake international driver's license please click here.