Anthony Lefroy (1800 – 12 January 1890) was an Irish Conservative Party MP in the United Kingdom Parliament.
He was born in Dublin, the eldest son of politician and jurist Thomas Langlois Lefroy, was educated at Trinity College and studied law at the King's Inns (1820) and Lincoln's Inn (1822).
He was appointed High Sheriff of Longford for 1849–50.
In 1870 he accepted the Chiltern Hundreds and left Parliament.
His estates passed to his brother, Thomas, who himself died the next year.