Christina Castillo Comer (born 1950) is the former Director of Science in the curriculum division of the Texas Education Agency (TEA). Comer spent nine years as the Director of Science until she resigned on November 7, 2007. Comer's resignation has sparked controversy about agency politics and the debate to teach evolution in public schools versus creationism or intelligent design. Prior to her position at the TEA, Comer was a middle school science teacher with San Antonio Independent School District.