Martin A. Beller (born July 10, 1967) is an American musician, songwriter, and drummer. Beller has been the drummer of American alternative rock band They Might Be Giants since 2004.
Beller is the current drummer for They Might Be Giants and has been since Dan Hickey's departure in 2004. He has recorded two solo albums and has contributed writing and vocals for three They Might Be Giants songs: "Alphabet Lost And Found" from Here Come the ABCs, "High Five!" from Here Come the 123s, and "Speed and Velocity" from Here Comes Science. The song "Marty Beller Mask" from Album Raises New and Troubling Questions is about him.
Beller lives in New York and is married to literary agent Jill Grinberg. They have two children, a daughter named Violet Beller (born 2005), and a son named Noah Beller (born 2008).