Michael Russell, MSP for Argyll and Bute, said the direction the UK was taking in wanting to pull out of the Single Market was “deeply worrying”.
Speaking to Bloomberg, Mr Russell said: “We also are deeply worried about the type of Brexit that’s being pushed forward.
“This is a very hard Brexit that’s going to be damaging to the Scottish economy, damaging to Scottish prospects. In those circumstances, we do not support what is taking place.
Michael Russell said he was "deeply worried" over 'hard' Brexit
This is a very hard Brexit that’s going to be damaging to the Scottish economy
“The people of Scotland, in the great majority, there are some of course who voted for leave, but the great majority do not support it and we recognise the damage it will do.
“So, it is quite right to oppose it and it’s right to oppose the type of country that Theresa May wants the UK to be. That’s not the type of country that I want Scotland to be.
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“In Scotland there is no majority for Brexit and there is absolutely no support for a ‘hard’ Brexit.”
Mr Russell said the more Theresa May limited options for Scotland, the further she pushed the country towards an independence vote.
The MSP said: “The final one of those options must be to ask the people of Scotland to choose what they want, what type of country they want to live in.”
He added that Wales did not vote for ‘hard’ Brexit either or Northern Ireland, which voted to stay in the European Union.
In Wales, First Minister Carwyn Jones and Plaid Cymru leader Leanne Wood have said they want “continued participation” in the EU’s trading bloc after Brexit.
The pair unveiled a 64-page paper calling for the UK to remain in the Single AMrket and keep freedom of movement rules.
Scottish First Minister Nicola Sturgeon has said another vote on separation “must” be held after the UK’s Supreme Court ruled that MPs must get a vote before the UK Government starts the Brexit process.