NT Chief Minister Michael Gunner says there will be a territory-wide lockout from 1pm local time for the unvaccinated.
This comes as the territory recorded 256 new cases of the virus.
“If you are not fully vaxxed, stay home. You are at greater risk of catching COVID, getting ill and needing hospital care,” Mr Gunner said.
“The fully vaccinated can continue as they were. For people who are not vaccinated, lockdown rules will apply to everyone aged 16 and above.
The lockout will end on Monday at midday and a vaccine pass system will be implemented.