Her position and that of the Prime Minister, Leo Varadkar - has come under pressure over her handling of information about the treatment of a police whistleblower.
Taoiseach Leo Varadkar confirmed that his deputy would stand down in a phone call to opposition leader, Fianna Fail's Micheal Martin, whose party threatened to bring down Ireland's minority government over the affair, reported the Independent.
The opposition will not proceed with a vote of no-confidence it had tabled, which had the potential to bring down Varadkar's minority government.
Fail wanted Fitzgerald ousted over her involvement in a long-running police scandal, revolving around her knowledge of an aggressive legal strategy against a respected police officer during a private inquiry in 2015. (ANI)