Earl of Kildare is an Irish peerage title. The tenth Earl was attained and his honours were forfeit in 1537. In 1554, the individual who would have been the earl but for the attainder was created Earl of Kildare; he was restored to the original earldom in 1569. The second earldom became extinct in 1599. The twentieth Earl was created Marquess of Kildare in 1761, and Duke of Leinster in 1766.

Earls of Kildare, First Creation (1316)

• John FitzThomas FitzGerald, 1st Earl of Kildare (1250-1316)
• Thomas FitzJohn FitzGerald, 2nd Earl of Kildare (d. 1328)
• Richard FitzThomas FitzGerald, 3rd Earl of Kildare (1317-1329)
• Maurice FitzThomas FitzGerald, 4th Earl of Kildare (1318-1390)
• Gerald FitzMaurice FitzGerald, 5th Earl of Kildare (d. 1410)
• John FitzGerald, 6th Earl of Kildare (d. 1427)
• Thomas FitzGerald, 7th Earl of Kildare (d. 1477)
• Gerald FitzGerald, 8th Earl of Kildare (c. 1456-1513)
• Gerald FitzGerald, 9th Earl of Kildare (1487-1534)
• Thomas FitzGerald, 10th Earl of Kildare (d. 1537) (forfeit 1537)
• Gerald FitzGerald, 11th Earl of Kildare (1525-1585) (restored 1569)
• Henry FitzGerald, 12th Earl of Kildare (1562-1597)
• William FitzGerald, 13th Earl of Kildare (d. 1599)
• Gerald FitzGerald, 14th Earl of Kildare (d. 1612)
• Gerald FitzGerald, 15th Earl of Kildare (1611-1620)
• George FitzGerald, 16th Earl of Kildare (1612-1660)
• Wentworth FitzGerald, 17th Earl of Kildare (1634-1664)
• John FitzGerald, 18th Earl of Kildare (1661-1707)
• Robert FitzGerald, 19th Earl of Kildare (1675-1744)
• James FitzGerald, 20th Earl of Kildare (1722-1773)
• See Duke of Leinster for further Earls of Kildare.

Earls of Kildare, Second Creation (1554)

• Gerald FitzGerald, 11th Earl of Kildare (1525-1585)
• Henry FitzGerald, 12th Earl of Kildare (1562-1597)
• William FitzGerald, 13th Earl of Kildare (d. 1599)