This book constitutes the refereed proceedings of the 10th International Symposium on Web and Wireless Geographical Information Systems, W2GIS 2011, held in Kyoto, Japan, in March 2011. A total of 13 full and 3 short papers plus 2 short keynote papers presented were carefully reviewed and selected from 36 submissions. The papers cover a wide range of topics including geographic information retrieval on the web, geo-spatial semantic and sensor web, location-based services, advanced GIS visualization techniques, personalization and adjustment for mobile GIS applications, and geo-spatial data...