You may need a visa for Thailand if you have a Tunisian passport
Visa options for Thailand (2)
You don't need a visa. You can travel to your destination for a limited stay. Be sure to check other entry requirements and how long you can stay for.
Visa on arrival for a maximum of 15 days for Tourism
Travelers need a visa to visit Thailand for Tourism. Travelers can get a visa on arrival in Thailand at the port of entry, such as an international airport or border crossing.
This is not offered by sherpa°.
Apply on the government site.