Erdogan's speech should not "drive a wedge in the Turkish community," Mikl-Leitner said at a press conference on Monday. Turkish people should be allowed to live in Vienna in peace, she added.
Even if Erdogan's visit was a private one, all the usual security measures would have to be taken, said the interior minister.
Her party colleague, Foreign Minister Sebastian Kurz of the conservative People's Party (ÖVP), also said last week that the prime minister must not try to split the communities.
The event in the Albert-Schuetz ice rink in Vienna's 22nd district still needs to be approved by the magistrate, said Mikl-Leitner. Heavy security would be needed. "We have to make sure that this event takes place peacefully and safely," she said.
The minister said she expects demonstrations against the Turkish prime minister.