Lettice FitzGerald 1st Baroness Offaly (c.1580- 1 December 1658) was an Irish noblewoman and a member of the FitzGerald dynasty. Heiress-general to the Earls of Kildare on the death of her father the title instead went to the next FitzGerald male heir when her grandfather the 11th Earl of Kildare died in 1585.