TikTok will be banned on government devices in NSW over cybersecurity concerns as Premier Chris Minns follows the Commonwealth and several other states.
The prohibitions follow intelligence agency advice about TikTok's parent company ByteDance, which focused on potential data harvesting.
Mr Minns said NSW government employees would be advised to implement the change as soon as possible, with the popular social media app to be scrubbed from their computers and phones.
TikTok will also be banned from government devices in Queensland, the ACT, SA and Victoria, with WA likely to follow suit.
Mr Minns said NSW government staff may still use TikTok on occasion to communicate with the public on issues like health.
"The NSW government will be implementing a number of mitigations to ensure that the security risk of this use is managed appropriately," he said.
The premier will delete his own account, which was used heavily throughout the recent state election and has more than 10,000 followers.
Victorian Premier Daniel Andrews, who has more than 100,000 followers, will also delete his account.
However, Queensland Premier Annastacia Palaszczuk, with 30,000 followers, said she was still unsure.
"The federal government has not banned the accounts, it's about them being on government devices, we will listen to what the federal government says," she said.
Responding to the federal government ban earlier this week, TikTok executive Lee Hunter said there was no evidence the app posed a security risk.
"We are extremely disappointed by this decision which, in our view, is driven by politics, not by fact," he said.