Lady Elizabeth FitzGerald, Countess of Kildare (c.1497 – after 1548), was the second wife of Gerald FitzGerald, 9th Earl of Kildare. Her father was Thomas Grey, 1st Marquess of Dorset. She was appointed one of the Maids of Honour to Princess Mary Tudor in 1514, and accompanied her to France when the princess married King Louis XII. She remained at the French court when Queen Mary's other English ladies were sent home, and stayed on to serve Mary's successor, Queen Claude, consort of the new King Francis I, in the same capacity. Elizabeth's fellow English Maids of Honour, who also remained behind were Anne Boleyn, and Mary Boleyn.

She married against her parents wishes ,Gerald "Gearóid Og" FitzGerald, 9th Earl of Kildare in London in 1522. By his marriage to Elizabeth, who was Henry VIII's cousin, Gerald gained much influence at court. In 1523, Elizabeth returned with her husband to Ireland, where he served as Lord Deputy of Ireland .

However the Earl of Kildare was later imprisoned in the Tower of London on charges of corruption and plotting rebellion in Ireland and died there 1534. Elizabeth had remained with him, nursing him throughout his imprisonment .The Earl had received a gunshot wound at the end of 1532 in an attack he had led against the O'Carroll clan at Birr. Elizabeth then retired to her brother Leonard's manor of Beaumanoir, in Leicestershire.

Meanwhile Her stepson "Silken Thomas" was executed for rebellion at Tyburn 1537 after her brother the Lord Deputy of Ireland, had quelled the rebellion.

Her eldest daughter, Elizabeth, was sent to the household of Princess Mary at Hunsdon. It was during that time that the poet Henry Howard, Earl of Surrey would immortalise the ten-year-old girl as "The Fair Geraldine" in his sonnet, "The Geraldine".

Her eldest son, Gerald, (who could not succeed to the earldom of Kildare as a result of its having been forfeited to the Crown )along with other disgruntled clans, formed the Geraldine League. When the federation was defeated in Monaghanin 1539, he fled to the Continent. 

As a result of Gerald's successful escape, Leonard Grey was attainted and executed for High Treason in July 1541 at the Tower of London by the orders of Henry VIII.

Gerald first went to France, and then Italy, where he would remain until his return to England in 1548. He was received at court by the new King, Edward VI, who returned his confiscated lands. 

The Countess kept a low profile and died on an unknown date sometime after 1548. Her children were ;

• Gerald FitzGerald, 1st/11th Earl of Kildare25 Feb 1525, d. 16 Nov 1585
• Lady Elizabeth FitzGerald "Fair Geraldine"b. 1528, d. Mar 1589/90
• Edward FitzGerald b. 17 Jan 1528, d. 1590