"After careful consideration of the current situation, management has made a decision to suspend all university activities across all campuses until further notice," he said.
"As always you are reminded that institutional updates are only communicated via official university channels like newsflash and posted to the CPUT website."
The protests started in August after students were unhappy with a lack of residences and accommodation at campuses.
Violent clashes between students and private security resulted in student arrests and the university was granted a high court interdict against students in September.
On Tuesday four students known as the #CPUT4, who are alleged to have been part of the protests, were found guilty of "not maintaining order" and of being "disrespectful", and were handed suspended sentences.