Elaine Sadler

Elaine Margaret Sadler is an Australian astrophysicist. She is the Australia Telescope National Facility Chief Scientist and a professor of astrophysics in the School of Physics at the University of Sydney. She was elected as a fellow of the Australian Academy of Science (AAS) in 2010 and commenced a 4-year term as Foreign Secretary of the AAS in 2018. She was previously director of the CAASTRO centre (2014–2018). Sadler is a member of the International Astronomical Union and served as the President Division VIII Galaxies & the Universe from 2009 to 2012. She has over 340 publications as of May 2026. At age 11, she joined the local amateur astronomical society in Guildford, England, where she was the youngest member. She received her PhD in astronomy from Australian National University in 1983.

In 2019, Sadler was appointed as an Officer of the Order of Australia for services to astrophysics and gender equality.

Sadler's primary research areas include galaxy evolution and active galaxies.