Performances tonight (Tuesday) and tomorrow have both been affected.
Last Saturday's performance of 'We Should Definitely Have More Dancing' was also cancelled at late notice.
A Coliseum Tweet read: "Due to positive Covid cases within the company, unfortunately we are forced to cancel Tue and Wed performances of #HaveMoreDancing.
"We sincerely apologise for any inconvenience caused.
"Ticket holders have been contacted."
Keep an eye on @OldhamColiseum on Twitter for up-to-date information.
