The federal government has sanctioned the Belarusian President and members of his family, as well as 22 more Russian propagandists, in response to their role in the war in Ukraine.
President Alexander Lukashenko has been added to the list for providing strategic support to Russia and its military during its invasion of Ukraine.
"We are also placing sanctions on his son Viktor Lukashenko, who previously held senior national security roles in the Belarusian government, and his wife Galina Lukashenko, the first lady of Belarus," Foreign Minister Marise Payne said.
"These latest steps, one month into Russia's invasion of Ukraine, continue our focused efforts to ensure that Russia and those who support its illegal, unprovoked invasion of its democratic neighbour, pay a high cost."
Mr Lukashenko is an authoritarian leader often described as "Europe's last dictator" who has close ties to the Russian President.
In 2020, thousands of people were detained by Belarusian authorities after protesting against an election that was rejected by the EU and the US as neither free nor fair.
Russia provided diplomatic support for Mr Lukashenko after weeks of protest and condemnation from European leaders and it recognised the election as legitimate.
As thousands of people protested on the streets of Minsk, Russian Foreign Minister Sergey Lavrov made Russia's alliance with Belarus clear.
"We would respond firmly to any attempts of those who try to sway the situation in Belarus, those who try to tear away Belarus from Russia by their clumsy flirtations with Minsk for many, many years, and undermine the basis of the union state," Mr Lavrov said.
The government sanctioned Russian President Vladimir Putin and his foreign secretary last month.
The latest round of federal government sanctions also targets 22 people described as "Russian propagandists and disinformation operatives".
They include senior editors at media organisations Russia Today, the Strategic Culture Foundation, InfoRos and NewsFront.
"Australia has now sanctioned a total of 32 pro-Kremlin propagandists, reflecting the strategic importance of disinformation in Russia's attempts to legitimise Putin's unprovoked and illegal invasion of Ukraine," Senator Payne said.
She said Australia would continue to impose further sanctions on those "who bear responsibility or hold levers of power".
Last week the government slapped sanctions on two Russian oligarchs with business interests in Australia, adding them to the ever-growing list of influential figures that had been sanctioned for their connection to the Kremlin.
