Daniel Guthrie Morrison (January 21, 1948 – July 24, 2023) was an American professional baseball umpire who worked in the American League from 1979 to 1999, and throughout both major leagues in 2000 and 2001. He wore uniform number 34 when the AL adopted them for its umpires in 1980 and retained the number when the AL and NL umpiring staffs merged in 2000. Morrison umpired 2,660 major league games in his 23-year career. Morrison umpired in the 1992 World Series, the 1988 Major League Baseball All-Star Game, three American League Championship Series (1989, 1996 and 1999), and three Division Series (1995, 1997, and 2000).^[1]

After attending Western Kentucky University in his hometown of Bowling Green, Kentucky, Morrison went to umpiring school and became a minor league umpire in 1974. In 1979, during the major league umpire strike, he turned down an offer for a major league position. This earned Morrison respect among major league umpires. Later that season, he ended up in the major leagues anyway; Lou DiMuro was injured and Morrison was called up as his replacement.^[2]

Dan Morrison died on July 24, 2023, at the age of 75.^[3]

• List of Major League Baseball umpires