Clarkson has been forced to cancel the Canadian dates on her 2015 Piece by Piece tour because of doctor recommendations.
“I am truly sorry that I have to cancel the remainder of my tour dates. I was so looking forward to sharing this tour with all my amazing fans in Canada and the UK,” Clarkson said in a statement.
“Unfortunately my doctor is telling me I have to stay on vocal rest, but I am working hard to get better as fast as possible.”
Concert promoter Evenko says ticket refunds can be obtained at the original place of purchase.
Clarkson was to play eight concerts across the country, starting in Ottawa on Oct. 1 and ending in Vancouver Oct. 17.
The tour was in support of the first American Idol’s new record Piece By Piece.