The ANU is urging all staff and students to exercise extra caution on campus following several reported assaults.
The Acton campus has been targeted by two males who have assaulted a small number of students over several nights.
Vice-Chancellor Professor Brian Schmidt said the University was working closely with ACT Policing and has boosted security on campus following the incidents.
"The safety of ANU students and staff is our number one priority," Professor Schmidt said.
"I urge all members of the ANU community to take extra care while moving around the campus, particularly at night.
"I encourage anyone who is walking or cycling around the campus at night to keep to the lit pathways, and remind students and staff they can contact security at any time to organise an escort from their building."
"Please do not approach anyone acting suspiciously and call ANU Security. If you are feeling unsafe or in immediate danger, call Police on 000."
ANUSA along with the University has developed a free app to help students and staff with safety and security on campus.
"The ANUOK app is an essential tool for both students and staff. The app provides up to date information about security on campus. I encourage all members of the ANU community to download the app," Professor Schmidt said.
ACT Policing have urged anyone with information about the incidents to contact Crime Stoppers on 1800 333 000, or through www.act.crimestoppers.com.au.