Marlene Hazle (May 8, 1934 – June 7, 2011) was an American known for her work in computer science throughout the 20th century. She worked at RAND Corporation and Mitre Corporation for development of the Semi-Automatic Ground Environment and AESOP respectively. Hazle eventually became a supervisor and trained military personnel on the SAGE operating system. Hazle continued making contributions to the fields of computer science and aerospace throughout the 20th century.