The UK Government has revealed that among them the Clydebank plant, which makes textiles for the car trade and which was spared the axe earlier this year, will close with the loss of 36 jobs.
The Department for Work and Pensions said the factory and one each in Stirling and Dundee were "not economically viable".
The news comes a week after it was revealed that the Remploy plant in Glasgow's Spring- burn will shut after the firm which agreed to buy the business pulled out amid concerns about the bidding process.
Union leaders, ministers and Labour and SNP politicians condemned the decision to put more disabled workers on the dole, swiftly followed by more calls for the Scottish Government to step in and save the factories.
Lyn Turner of Unite union said: "The UK Gov- ernment is landing blow after blow on the most vulnerable workers in our society and it's clear they won't rest until Remploy is obliterated - the Scottish Govern- ment must intervene.
"Unite calls on the Scottish Government to follow the Welsh government's example and set aside a rescue package for Remploy jobs."
Jackie Baillie, West Dunbartonshire Labour MSP, said: "The Tories tried to sneak this an- nouncement out - there is no season of goodwill in Downing Street."
SNP MSP, Bruce Crawford, told First Min- ister Alex Salmond that staff had been let down by the UK government.
Mr Salmond said: "I think this speaks very poorly of the attitude of the UK Government to workers in that position."
Enterprise Minister Fergus Ewing said the Scottish Government would support efforts to secure a future for the factories.