Dr. Isabel Keith Baker is a former educator in the U.S. state of Oklahoma. Throughout her 43 years as an educator, Baker taught in several Oklahoma schools, retiring as Professor Emeritus from Northeastern State University in 1994. Baker served on the Oklahoma State University A&M Board of Regents from 1991 until 1999. She played a major role in the renovation of Willard Hall, the home of OSU's College of Education.