Caroline Lane Jebb, Lady Jebb (1840 - 11 July 1930), née Reynolds, then Slemmer, was an American intellectual and socialite.
Born Caroline Reynolds in 1840 in Evansburg, Pennsylvania, she was the daughter of the Rev. John Reynolds who was an English clergyman who had emigrated to the United States in about 1825. She married in 1856, Lt. Adam J. Slemmer, and they lived on military bases in South Carolina, Florida, and Wyoming Territory. He was a Brigadier-General in the Union Army during the American Civil War. Their only child, a son, died young. After Slemmer's death in 1868, she moved to Cambridge, England to visit relatives, including her cousin "Mrs Potts"
In 1874 she married the classicist Richard Claverhouse Jebb. They lived in Glasgow, where her husband was a professor, but spent summers in Cambridge until the death of Benjamin Hall Kennedy vacated the Regius Professor of Greek at Cambridge. Her social circle included Robert Browning, Thomas Carlyle, Charles Darwin, Benjamin Disraeli, George Eliot, Charles Hale, Oliver Wendell Holmes, James Russell Lowell, Alfred Lord Tennyson, Ellen Terry, Mark Twain, and William Thackeray. Her niece, Maud du Puy, daughter of her sister Ellen followed her to England and she took the role of proxy mother, helping to arrange her 1884 marriage to George Darwin, the astronomer son of the naturalist Charles Darwin.