One of my New Year's resolutions is to get to more geo-related conferences this year. Luckily for me Quarry One Eleven has created this Geoconferences Map.
The Google Map is fairly basic but it lets you zoom in on a location and find upcoming geoconferences nearby. You can also sort the results shown on the map by month. If you know of a conference that is missing you can get it added to the map by contacting Quarry One Eleven via their website.