TRNSMT has announced it has rebooked many artists from the 2020 festival for next year.
Liam Gallagher, The Courteeners and Lewis Capaldi were due to play over the weekend of July 10-12 this year, with Ian Brown, Foals, Rita Ora and Snow Patrol also on the bill.
After Scotland's First Minister Nicola Sturgeon announced lockdown measures would continue in some form across the country to stop the spread of Covid-19, the festival at Glasgow Green was cancelled.
Organisers have now said these artists are among those who will perform at the event next year and they are working to confirm others.
A spokeswoman said: "Following the news that TRNSMT 2020 is unable to go ahead, organisers have today announced that they have been working hard with artist teams over the last few days to rebook most of the acts from the 2020 event to the 2021 festival.
"TRNSMT festival organisers recognise that tens of thousands of 2020 ticket-holders were looking forward to seeing this year's line-up so have moved quickly to secure the artists fans wanted to see this year for 2021's festival.
"Over the next few weeks, we will work to try to tie up those 2020 acts who haven't been able to commit to 2021 yet or replace the few gaps in the schedule with other amazing artists."
Fans who have purchased tickets for the 2020 event can carry them over for TRNSMT 2021.
Organisers will work with the local authority to progress licence applications and permissions to use the parks.