The Succession actor said it was "something that worries me" as the party prepares to launch its manifesto this week.
John Swinney has previously insisted independence will be mentioned on "page one, line one" of the policy plan.
Dundonian Cox - who achieved global fame playing business mogul Logan Roy - is a long-term supporter of Scotland leaving the Union and is also a fierce critic of Brexit.
The star, 78, used a BBC interview yesterday to claim the decision to leave the European Union and the economic consequences was "this demon we don't talk about".
But he also raised fears the SNP could water down their commitment to delivering their No1 objective.
Asked if he was looking forward to the launch of the SNP's manifesto, Cox said: "I'm not quite sure what's going to happen... as Plaid Cymru have done, it could be backing away from the notion of independence."
Denne historien er fra June 17, 2024-utgaven av Daily Record.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Allerede abonnent ? Logg på
Denne historien er fra June 17, 2024-utgaven av Daily Record.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Allerede abonnent? Logg på
SOME THINGS NEVER CHANGE
ANGEBALL is still deadly - and so is Lawrence Shankland.
REACH FOR THE STARS
Nick: When I told people I wanted to be an Olympian they said it was as likely as being an astronaut but now I've made it
BOXER JOSH HOOKS A £4.5M FORTUNE
Tartan Tornado firm's assets soar more than £1.2m in a year
30-STONE RAPIST CAGED
Predator lured women in before taking out jealous rage on them
£50K EVEREST CHARITY CLIMB
Child abuse survivors take on world's highest peak
'Scared' Zara told chiefs she was OK
'Strictly bosses probed Graziano rehearsal blast'
TROON'S OPEN FOR BUSINESS
Town buzzing as excitement builds for greatest major
MILITARY CHIEF PLAYED WITH WOMAN'S HAIR
Senior officer who kissed victim admits indecency at court martial
BABY REINDEER EMMY PICK ROW
Lawyer for 'Martha' hits out at Gadd for putting 'money before the truth'
Biden: I'd drop out... only if doc said I had problem
US PRESIDENT Joe Biden has said he will consider dropping out of the election race - but only on doctor's advice.