On 2018-08-16 13:22, Stig Venaas wrote: ..... > I did not quite trust the businessevents web site, so I tried to to > look at the cited references, including the Ministry of Foreign > affairs, and I could not find any place there where it says that a > visa is not needed when attending a conference. The info I've seen > from various Thai consulates' web sites all seem to indicate that a > visa is required for attending a conference. Is there a more > authoritative source than the businessevents site stating this? I hope it's clear why IASA does not, cannot and should not offer any advice. If a person born in country A but having a passport from country B and resident in country C wants to attend a conference in country D, travelling via country E, that person (or their travel agent) needs to find out whether a visa is needed in their particular case. As far as I can see, except for very clear cases, that means contacting the relevant consulate (the one that handles travellers from country C, but it might be located in yet another country). Brian