Derek Richard Grant (sometimes known as Derek R. Grant) is an American musician, singer and songwriter best known as the third and current drummer for punk rock band Alkaline Trio, having joined the band in 2001. He is also a member of Chicago "supergroup" Dead Ending. He was previously a member of The Suicide Machines, Telegraph, Gyga, Thoughts of Ionesco, , Walls of Jericho, The Exceptions and Broken Spoke. In addition to playing the drums, Grant is a guitarist and vocalist, and has filled in as guitarist for both Face to Face (1998) and The Gaslight Anthem (October 2008).