This publication is the proceedings of the Thematic Session, ““Geohazards: Impacts and Challenges for Society Development in Asian Countries” held at the 49^th CCOP Annual Session on 22-23 October 2013, Sendai, Japan.  This has been published as Geological Survey of Japan Open-File Report, No. 609, by Geological Survey of Japan (GSJ), National Institute of Advanced Industrial Science and Technology, October 1, 2014.  This contains 24 full papers presented at the session, from Member and Cooperating Countries of CCOP.  This 220 pages publication is available both in printed book, and CD-ROM, and its 16MB PDF file can be downloaded from this link, http://www.ccop.or.th/download/as/49as2.pdf