The US singer was set to play at London’s O2 on Thursday and Friday, but has cancelled those dates and five others in Antwerp, Lodz, Frankfurt and Zurich.
Her management says the Dangerous Woman tour has been suspended “until we can further assess the situation and pay our proper respects to those lost”.
“The London O2 shows this week have been cancelled as well as all shows thru June 5 in Switzerland,” a statement said.
“We ask at this time that we all continue to support the city of Manchester and all those families affected by this cowardice and senseless act of violence.
“Our way of life has once again been threatened but we will overcome this together. Thank you.”
t is unclear whether the star will fulfil the remaining dates on the European leg of her world tour, due to start in Paris on 7 June, then visiting Portugal, Spain and Italy before heading to Brazil, Japan and Thailand.