The Open Source Geospatial Foundation is not-for-profit organization to empower everyone with open source geospatial. Directly supports projects as an outreach and advocacy organization providing financial, organizational and legal support. Works with our sponsors and partners for open software, standards, data, research and education.
This is usually set in the
header.php
of the theme.I generated one for the OSGeo wiki, which could be used (if a better version doesn't exist):
http://www.gatewaygeomatics.com/dl/favicon.ico