MerpCon is an acronym for "Middle-Earth Role Playing Convention", a role playing game convention dedicated solely to role-playing gaming in J.R.R. Tolkien's Middle-earth. The event is held annually on the last weekend of July and runs for 3 days from Friday, through to the end of Sunday (and sometimes a little into the following Monday morning). To date MerpCon has been held each year in Spokane, WA, USA. Beginning in 2009 MerpCon began to transition to being called Tolkienmoot as this convention's venue began to expand to include more Tolkien-related activities, events, and guests beyond just role playing in Middle-earth.
The event began with MerpCon I in 2005, followed by MerpCon II in 2006, MerpCon III in 2007, MerpCon IV in 2008, MerpCon V was held in 2009, MerpCon VI aka Tolkienmoot 2010, MerpCon VII aka Tolkienmoot 2011.