Lydia Hoyt Farmer (née, Hoyt; July 19, 1842 or 1843 – December 27, 1903) was a 19th-century American author and women's rights activist. For many years, Farmer contributed to the leading newspapers and magazines, on various lines: poems, essays, juvenile stories, historical sketches and novels. She was of a deeply religious nature, and endeavored to tinge all her writings with a moral as well as an amusing sentiment. She edited What America Owes to Women, for the Woman's Department of the World's Columbian Exposition. Her works included: Aunt Belindy's Point of View; The Doom of the Holy City; A Story Book of Science; A Knight of Faith; Short History of the French Revolution; Girls' Book of Famous Queens; What America Owes to Women; and others. Farmer died in 1903.

Lydia Maria Child was an American abolitionist, women's rights activist, Native American rights activist, novelist, journalist, and opponent of American expansionism.

Lyman J. Abbott was an American Congregationalist theologian, editor, and author.

Lyman Cobb was the leading competitor of Noah Webster as an author of spelling books. Cobb's speller, A Just Standard for Pronouncing the English Language, was originally published in 1821 when the author was a young teacher in upstate New York. The book, issued by Spencer & Stockton of Ithaca, New York, lifted heavily from The Columbian Spelling-Book published by Daniel Crandall in Cooperstown, New York, in 1819. However, it was Cobb's book, not Crandall's, that became a success.

Lyman Hotchkiss Atwater was an American Presbyterian philosopher.

Lynn Thorndike was an American historian of medieval science and alchemy. He was the son of a clergyman, Edward R. Thorndike, and the younger brother of Ashley Horace Thorndike, an American educator and expert on William Shakespeare, and Edward Lee Thorndike, known for being the father of modern educational psychology.

Lyon Gardiner Tyler Sr. was an American educator, genealogist, and historian. He was a son of John Tyler, the tenth president of the United States. Tyler was the 17th president of the College of William & Mary, an advocate of historical research and preservation, and a prominent critic of U.S. President Abraham Lincoln.

Lysias was a logographer in Ancient Greece. He was one of the ten Attic orators included in the "Alexandrian Canon" compiled by Aristophanes of Byzantium and Aristarchus of Samothrace in the third century BC.

Giles Lytton Strachey was an English writer and critic. A founding member of the Bloomsbury Group and author of Eminent Victorians, he established a new form of biography in which psychological insight and sympathy are combined with irreverence and wit. His biography Queen Victoria (1921) was awarded the James Tait Black Memorial Prize.