After four years of marriage, Foy and the English actor announced their separation in a joint statement to Metro U.K.
"We have separated and have been for some time. We do however continue as great friends with the utmost respect for one another," Foy and Campbell shared on Thursday.
Foy, 33, and Campbell married in 2014 and are parents to two-year-old daughter, Ivy Rose.
The news of their split comes weeks after Campbell shared he had suffered a benign brain tumour whilst Foy filmed the second season of The Crown.