The officials say the five boxers and three weightlifters left the Gold Coast village over the past three days but authorities say they have not broken any law.
Cameroon brought 42 athletes to the Gold Coast Games.
Cameroon team manager Victor Agbor Nso on Wednesday confirmed weightlifter Olivier Matam and boxers Ndzie Tchoyi and Simplice Fotsala had been due to compete this week but could not be found.
Two Ugandan rugby sevens players, Benon Kizza and Philip Pariyo, went missing after Glasgow 2014.
"They are still within their visas, they have the right to travel freely", Commonwealth Games Federation chief executive David Grevemberg said.
One who failed to appear was Ulrich Rodrigue Yombo who skipped Wednesday morning's weigh-in for his quarter-final bout in the 81kg division against Canada's Harley O'Reilly.
The Australian police and security services were immediately alerted about their disappearance as the search intensifies to track them down.
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In a chat with BBC, press attache Simon Molombe, said it as "desertion" and that the missing athletes had been reported to Australian police.
According to Seven News, the athletes' visa requirements expire on May 15, allowing them to spend another month legally in Australia.
"The Cameroon Commonwealth Games Team is sad to announce that eight of the 24 athletes they took to".
Gold medallist Heena Sidhu of India, silver medallist Elena Galiabovitch of Australia and bronze medallist Alia Sazana Azahari of Malaysia take the podium after the Women's 25m Pistol Final at the 2018 Commonwealth Games in Brisbane April 10, 2018.
It is not the first time Cameroonian athletes have gone missing.
Cameroon officials told 7 News that most of the athletes disappeared in the middle of the night, some even leaving their belongings behind at the athlete's village.
An Australian Border Force (ABF) spokesperson said in a statement today that the Australian Government had been "working closely with the organising committee and global stakeholders to ensure Commonwealth Games officials and athletes were aware of their visa responsibilities".
Meanwhile, most of the remaining Cameroon delegation has left Australia now that their specific competitions are complete.