The cancellation affects dates in the UK and Canada, reported People magazine.
The 33-year-old singer released a statement on her website apologizing and telling fans that the cancellations come after orders from her doctor to stay on vocal rest.
"I am truly sorry that I have to cancel the remainder of my tour dates," Clarkson's statement said.
"I was so looking forward to sharing this tour with all my amazing fans in Canada and the UK. 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."