Miller was born in
Goldthwaite, Texas in 1931 and graduated from
Goldthwaite High School there in 1949. He served in the
United States Navy during the
Korean War before enrolling Southwest Texas State University now—
Texas State University. Miller played for the
Southwest Texas State Bobcats as a
fullback and
halfback in 1955 and 1956. Miller coached
high school football at
Alice High School in
Alice, Texas and
Roy Miller High School in
Corpus Christi, Texas before returning to Southwest Texas State as an assistant coach in 1961. He succeeded
Milton Jowers as head football coach in 1965. Miller was head football coach for 14 seasons, the second longest tenure in program history and has the most wins with 86. Miller retired as athletics director at Texas State in 1992. ==Head coaching record==