The following are colleges and universities in Thailand with online presence:
1. Asian Institute of Technology (http://www.ait.ac.th/)
2. Asian University of Science and Technology (http://www.asianust.ac.th/)
3. Assumption University of Thailand (http://www.au.ac.th/)
4. Bangkok University (http://www.bu.ac.th/)
5. Burapha University (http://www.buu.ac.th/)
6. Chiang Mai University (http://www.chiangmai.ac.th/)
7. Christian College (http://www.christian.ac.th)
8. Chulalongkorn University (http://www.chula.ac.th/)
9. Dhurakijpundit University (http://www.dpu.ac.th/)
10. Dusit Thani College (http://www.dusitthanicollege.ac.th/)
11. Eastern Asia University (http://www.eau.ac.th/)
12. Far Eastern College (http://www.ccc.ac.th/fec)
13. Hatyai City College (http://www.hcc.ac.th/)
14. Huachiew Chalermprakiet University (http://www.hcu.ac.th/)
15. Kasem Bundit University (http://www.kbu.ac.th/)
16. Kasetsart University (http://www.ku.ac.th/)
17. Khon Kaen University (http://www.kku.ac.th/)
18. King Mongkut's Institute of Technology Ladkrabang (http://www.kmitl.ac.th/)
19. King Mongkut's Institute of Technology North Bangkok (http://www.kmitnb.ac.th/)
20. King Mongkut's Institute of Technology Thonburi (http://www.kmutt.ac.th/)
21. Krirk University (http://www.krirk.ac.th/)
22. Mae Fah Luang University (http://www.mfu.ac.th/)
23. Maejo University (http://www.mju.ac.th/)
24. Mahachulalongkorn Buddhist University (http://www.mcu.ac.th/)
25. Mahamakut Buddhist University (http://www.mbu.ac.th/)
26. Mahanakorn University of Technology (http://www.mut.ac.th/)
27. Mahasarakham University (http://www.msu.ac.th/)
28. Mahidol University (http://www.mahidol.ac.th/)
29. Mahidol University - College of Management (http://www.cmmu.mahidol.ac.th/)
30. Mahidol University - International College (http://www.muic.mahidol.ac.th/)
31. Naresuan University (http://www.nu.ac.th/)
32. National Institute of Development Administration (http://www.nida.ac.th/)
33. Nivadhana University (http://www.nivadhana.ac.th/)
34. North-Eastern University (http://www.neu.ac.th/)
35. Payap University Chaiang Mai (http://www.payap.ac.th/)
36. Prince of Songkla University (http://www.psu.ac.th/)
37. Rajabhat Institute - Suan Dusit (http://www.dusit.ac.th/)
38. Rajamangala Institute of Technology (http://web1.rit.ac.th/index_new.php)
39. Rajapark College (http://www.rajapark.ac.th/)
40. Ramkhamhaeng University (http://www.ru.ac.th/)
41. Rangsit University (http://www.rsu.ac.th/)
42. Rattana Bundit College (http://www.rbac.ac.th/)
43. Saengtham College (http://www.saengtham.th.edu/)
44. Saint Louis College (http://www.saintlouis.or.th/)
45. Shinawatra University (http://www.shinawatra.ac.th/)
46. Siam University (http://www.siamu.ac.th/)
47. Silpakorn University (http://www.su.ac.th/)
48. Sirindhorn International Institute of Technology (http://www.siit.tu.ac.th/)
49. South-East Asia University (http://www.sau.ac.th/)
50. Southeast Bangkok College (http://www.sbc.th.edu/)
51. Srinakharinwirot University (http://www.swu.ac.th/)
52. Sripatum University (http://www.spu.ac.th/)
53. St. John's University (http://www.stjohn.ac.th/)
54. Sukhothai Thammathirat Open University (http://www.stou.ac.th/)
55. Suranaree University of Technology (http://www.sut.ac.th/)
56. Tapee College (http://www.tapee.ac.th/)
57. Thai-German Graduate School of Engineering (http://www.tggs.rwth-aachen.de/)
58. Thaksin University (http://www.tsu.ac.th)
59. Thammasat University (http://www.tu.ac.th/)
60. The Joint Graduate School of Energy and Environment (http://www.jgsee.kmutt.ac.th/)
61. The University of Central Thailand (http://www.tuct.net/)
62. Thonburi College of Technology (http://www.tct.ac.th/)
63. Ubonratchathani University (http://www.ubu.ac.th/)
64. University of the Thai Chamber of Commerce (http://www.utcc.ac.th/)
65. Vongchavalitkul University (http://news.vu-korat.ac.th/)
66. Walailak University (http://www.wu.ac.th/)
67. Webster University Thailand (http://www.webster.edu/thailand/)
68. Yonok College (http://www.yonok.ac.th/)
Please post any other university if known.