If you plan on taking a trip to Bangkok and would like to check out some galleries there, then I have a few to recommend. I recently visited Bangkok and was of course on the "hunt" for new art and artists from the region. To my surprise, I discovered an incredible collection of contemporary artists all living and working in Thailand, with very little exposure outside of the country.
One of the galleries helping these artists get exposed is Number One Gallery. They always go the extra mile to make sure the gallery is transformed for each show, putting on some amazing installations. They are located in the Silom Galleria Bld, in Silom. It looks like a shopping complex but its just full of art galleries, from Asian antiques to contemporary findings.
Another Gallery/shop that has some interesting stuff is Art Gorillas in Siam Square. Pathum Wan Bangkok. They have really creative exhibitions, including vinyl toys, installations, amazing paintings and again a nice collection of the artists from Thailand.
A few other galleries to check out are:
H Gallery Bangkok - www.hgallerybkk.com
La Lanta - www.Lalanta.com