An Interfaith service to pray for people caught up in Sydney's hostage drama is to be held at the Theo Notaras Multicultural Centre at 7.30pm on Monday.
The service is being led by the ACT Jewish Community Inc's Rabbi Alon Meltzer.
"As the shocking news continues to come out of Sydney relating to the hostage situation, faith-based communities around the country have been asked to come together to call for unity among all Australians, pray for those who are involved in this terrible situation and stand up to fundamentalism and extremism," Rabbi Meltzer said.
The service will also be addressed by the president of the Canberra Interfaith Forum, Dean Sahu Kahn.
It is expected to run for 30 minutes. The centre is at 180 London Circuit.
ACT Chief Minister Andrew Barr said the incident in Sydney was "of deep concern".
He said there were no specific threats to the ACT and well tested plans were in place for any emergency or threat to public safety.
"People should continue to go about business as usual but be conscious of any suspicious activity and, most importantly, to report suspicions and concerns to the appropriate authorities," Mr Barr said.