The Dynamite Duumvirate Tag Team Title Tournament (DDT4) was an annual professional wrestling tag team tournament produced by Pro Wrestling Guerrilla (PWG) between 2007 and 2015. The inaugural tournament was contested for the vacant PWG World Tag Team Championship. Reigning champions entered the tournament and defended the title in each round of the tournament for five editions (2008, 2009, 2010, 2013 and 2015) while three editions (2011, 2012 and 2014) of the tournament were used to determine the number one contenders to the champions.