Shirley J. McKague (née Woolard, December 4, 1935 – May 21, 2020) was an American politician from Idaho. She was an Idaho State Senator, representing the 20th District as a Republican from 2007 to 2012. She previously served as an Idaho State Representative for Districts 14B and 20B from 1997 until her appointment to fill the vacancy caused by the resignation of Senator Gerry Sweet.