A spike in infections has forced governments in Asia to impose fresh lockdowns and curbs, which are causing disruptions in parts supply across the region, adding to a global chip shortage.
The latest stoppages will bring lost output to 9,000 vehicles, the automaker said, and affect production of Lexus models and the Land Cruiser.
The attack comes just after Japan joined Western allies in clamping down on Russia due to its invasion of Ukraine.
The planned four-day halt to production at a Tsutsumi factory line, which makes Camry and Corolla models, will cut vehicle output by as many as 1,500 vehicles.
The stoppages affect output of Lexus models and the Toyota Land Cruiser as the automaker runs short of components from plants in Southeast Asia where production has been disrupted.
Mazda will suspend production at its two domestic factories for two days in April as factors including a rise in COVID-19 cases in China cause supply disruptions.
The automaker will suspend production on three lines at its Motomachi plant in September. That follows suspensions at its Tsutsumi plant.
Toyota said there was "a possibility" that it could lower its full-year production plan of 9.7 million vehicles as it faces a continuing shortage of parts due to the COVID-19 lockdowns in China.
Toyota CEO Akio Toyoda said the automaker was still pursuing a multi-pronged, carbon-reduction strategy that also includes hybrid cars and hydrogen-powered vehicles.