Laurentius saga (modern Icelandic Lárentíus saga) is an Icelandic Saga, written in the third quarter of the fourteenth century, describing the life of Icelandic bishop Laurentius Kálfsson, thus covering the period 1267–1331. The presumed author, Einarr Hafliðason, was a student and friend of Laurentius. Although incomplete, Laurentius saga is considered to be one of the best written of the early Icelandic biographies, as well as being an important source of information about the teaching and education methods of the day. It can be seen as one of the products of the North Icelandic Benedictine School.