Daniel J. Callahan
- Throws Right
- Height 6' 4", Weight 195 lb.
- School Quincy College, University of New Orleans
- High School Springfield High School
Dan Callahan was a minor league pitcher and a college coach.
Callahan was the head coach at Eastern Illinois University from 1989 to 1994.
In 1995, Callahan became head coach at Southern Illinois University. He compiled a 442-447-1 record in 16 seasons before passing away of neurotropic melanoma at the age of 52. At both EIU and SIU, he worked with assistant coach Derek Johnson, who later became a major league pitching coach.