Meghan Trainor
In December 2016, the singer canceled her remaining tour dates for the year due to illness. She said her doctor put her on "strict vocal rest."
She had also canceled the remainder of her MTrain Tour in 2015 after discovering that she had hemorrhaged her vocal chords following a bad case of bronchitis.
Kanye West
The rapper canceled both his 2009 Fame Kills Tour with Lady Gaga and the last month and a half of his 2016 Saint Pablo Tour.
Lady Gaga
In addition to her Fame Kills Tour cancellation in 2009, Mother Monster also was forced to cancel her Born This Way Ball in 2013 due to a hip injury.
Kelly Clarkson
The singer was forced to cancel remaining dates of her Piece by Piece Tour in 2015 due to injured vocal chords. "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," she told fans in a statement.
Sam Smith
The crooner canceled two months of tour dates in mid 2015 in order to undergo surgery on his vocal chords. While he voiced his disappointment and fear for surgery on Instagram, the singer also promised fans a return, saying "I will be back in 6-8 weeks and I cannot wait to sing for you all soon."
The Foo Fighters
Following lead singer Dave Grohl breaking his leg on stage in 2015, the band had to cancel their remaining tour dates so that he could undergo surgery.
Ariana Grande
The pop star canceled four international shows from her Honeymoon Tour in 2015, without providing an explanation other than a tweet saying she wouldn't be able to make it abroad.
Lorde
Following a severe chest infection, Lorde was forced to cancel the entirety of a tour in Australia in 2014.
The Jonas Brothers
In 2013 the trio called off their scheduled Jonas Brothers Live Tour due to a "rift" in the band. Fans later learned that that rift was due to the fact that they didn't want to be a band anymore. Just 20 days after announcing the cancellation, the band broke their silence to announce their split.
Christina Aguilera
The powerhouse singer postponed her 2010 summer tour due to prior commitments regarding her upcoming album and movie promotion.
Lucy Hale
The Pretty Little Liars star canceled the majority of her 2015 The Road Between Tour due to vocal strain.
Selena Gomez
The pop star was forced to cancel half her Revival Tour due to her ongoing struggle with Lupus. The singer told fans that she had been suffering with severe anxiety and depression, and that the cancellation was "best way forward" in an effort "to be proactive and focus on maintaining my health and happiness."
Drake
The rapper canceled the latter half of his Summer Sixteen Tour following doctor's orders to rest his ankle, after severely injuring it during the earlier half of the tour.
Iggy Azalea
The controversial rapper canceled her Great Escape Tour in 2015 after announcing that she needed a break to work on her mental health and stability.
Adele
The powerful songstress was forced to cancel the 13 of her U.S. tour dates in 2011 due to a "weak" voice. The singer said she would return to make up the dates following a stint in vocal rehab to help heal her vocal chords and to help restore her mental and physical stamina.
U2
As a result of frontman Bono's severe back injury, the rock band was forced to cancel the final 13 dates of their 2009 360° Tour. But, luckily for fans, were able to make up all of the missed dates for the following year.