The XYZ Mesons at BESIII

The XYZ mesons in the charmonium sector do not fit within the normal patterns of charm and anti-charm quark bound states; their precise interpretation remains unsettled. In December of 2012, the BESIII Collaboration undertook a new program to study this class of mesons by directly producing the Y(4260) and Y(4360) states in electron-positron collisions. Since that time, BESIII has collected the world's largest samples of Y(4260) and Y(4360) decays, which has led to a number of new discoveries. I will review the current status of XYZ studies at BESIII.