David Wallace Heaverlo (born August 25, 1950 in Ellensburg, Washington) is a former right-handed Major League Baseball relief pitcher. His out pitch was a forkball. He attended Moses Lake High School in Moses Lake, Washington, graduating in 1968. He then went on to Central Washington University, in Ellensburg, Washington, where he graduated in 1973. For his baseball contributions, he is a member of the school hall of fame at both his high school and university. Heaverlo now works as the pitching coach for the Big Bend Vikings in Moses Lake, Washington. He also hosts a radio talk show.