The International Cricket Council (ICC) will review security arrangements made for the Champions Trophy next month.
At least 22 people have died and 59 have been injured in a suicide attack at Manchester Arena after a pop concert by US singer Ariana Grande.
The cricket tournament begins in nine days, with Cardiff's SWALEC Stadium hosting four matches.
The ICC said safety and secuirty for the global tournamanet was its highest priority and "it will continue to work with authorities over the coming hours and days and review our security in line with the threat levels."
Meanwhile, ahead of the Champions League final in Cardiff, UEFA said they were "shocked" by the attack.
European football's governming body have two major finals over the next two weeks.
Wednesday's Euopa League final in Stockholm is followed by the match at the Principality Stadiun on the 3 June.