Mack G. Shirley (born 1933) is a member of the Idaho House of Representatives. He has been in the state house since 2002.
Shirley was born in Rexburg, Idaho and received his bachelors degree from Ricks College (now BYU-Idaho). He received his masters and Ph.D. from the University of Utah. From 1957-1963 Shirley was a teacher and then a principal in the Sugar-Salem School District. He then was a faculty member, dean of students and vice president of Ricks College until his retirement in 2000.
Shirley is a Latter-day Saint. He and his wife Shanna are the parents of eight children.