Edmund Wilson Jr. (May 8, 1895 – June 12, 1972) was an American writer, literary critic, and journalist. He is widely regarded as one of the most important literary critics of the 20th century. Wilson began his career as a journalist, writing for publications such as Vanity Fair and The New Yorker. He helped to edit The New Republic, served as chief book critic for The New Yorker, and was a frequent contributor to The New York Review of Books.

His notable works include Axel's Castle (1931), described by Joyce Carol Oates as "a groundbreaking study of modern literature." Oates writes that Wilson "encroached fearlessly on areas reserved for academic 'experts': early Christianity in The Dead Sea Scrolls (1955), native American civilization in Apologies to the Iroquois (1960), and the American Civil War in Patriotic Gore (1962)."

Wilson also authored a novel, I Thought of Daisy (1929) and a collection of short stories, Memoirs of Hecate County (1946). He was a friend of many notable figures, including F. Scott Fitzgerald, Ernest Hemingway, John Dos Passos and Vladimir Nabokov. His dream for a Library of America series of national classic works came to fruition through the efforts of Jason Epstein after Wilson's death. He was a two-time winner of the National Book Award and received the Presidential Medal of Freedom in 1964. He died in 1972 at age 77.

Wilson was born in Red Bank, New Jersey. His parents were Edmund Wilson Sr., a lawyer who served as New Jersey Attorney General, and Helen Mather (née Kimball). Wilson attended The Hill School, a college preparatory boarding school in Pottstown, Pennsylvania, graduating in 1912. At Hill, Wilson served as the editor-in-chief of the school's literary magazine, The Record.

From 1912 to 1916, he was educated at Princeton University, where his friends included F. Scott Fitzgerald and war poet John Allan Wyeth. Wilson began his professional writing career as a reporter for the New York Sun, and served in the army with Base Hospital 36 from Detroit, Michigan, and later as a translator during the First World War. His family's summer home at Talcottville, New York, known as Edmund Wilson House, was listed on the National Register of Historic Places in 1973.

Wilson was the managing editor of Vanity Fair in 1920 and 1921, and later served as associate editor of The New Republic and as a book reviewer for The New Yorker and The New York Review of Books. His works influenced novelists Upton Sinclair, John Dos Passos, Sinclair Lewis, Floyd Dell, and Theodore Dreiser. He served on the Dewey Commission that set out to fairly evaluate the charges that led to the exile of Leon Trotsky. He wrote plays, poems, and novels, but his greatest influence was literary criticism.

Axel's Castle: A Study in the Imaginative Literature of 1870–1930 (1931) was a sweeping survey of Symbolism. It covered Arthur Rimbaud, Auguste Villiers de l'Isle-Adam (author of Axël), W. B. Yeats, Paul Valéry, T. S. Eliot, Marcel Proust, James Joyce, and Gertrude Stein.

In 1931, monitoring the Coal War in Harlan County, with Mary Heaton Vorse and Malcolm Cowley he was run out of Kentucky by nightriders.