Lincoln College (formally, The College of the Blessed Mary and All Saints, Lincoln) is one of the colleges of the University of Oxford. Lincoln was founded in 1427 by Richard Fleming, Bishop of Lincoln. The charter for it was issued by King Henry VI.

The college is situated on Turl Street in central Oxford and has three quadrangles. The first quadrangle dates from the 15th century, with the second Chapel quadrangle added in the early 17th century and The Grove added in the 19th century. The college library is located in the converted 18th-century All Saints' Church which became part of the college in 1971. Its sister college is Downing College, Cambridge. Mensa, the oldest high-IQ society in the world, was founded at the college in 1946.

The Rector of the college is former president of the Royal Geographical Society Nigel Clifford. Notable alumni include writers Theodor Seuss Geisel (Dr. Seuss) and David John Moore Cornwell (John le Carré), former British prime minister Rishi Sunak and Labour politician Shabana Mahmood. Past fellows include the founder of Methodism John Wesley, the physician John Radcliffe and antibiotics scientists Howard Florey, Edward Abraham, and Norman Heatley.