The font used for "As I Lay Dying" is a serif font called Bembo. Bembo was designed by Stanley Morison in 1928 and is named after the Italian printer and poet Francesco Griffo who created the first italic typeface in the 15th century. Bembo is widely used in the publishing industry and is known for its elegance and readability. Its classic and timeless design makes it a popular choice for book covers and titles.