Die Fragmente der griechischen Historiker, commonly abbreviated FGrHistorFGrH (Fragments of the Greek Historians), is a collection by Felix Jacoby of the works of those ancient Greek historians whose works have been lost, but of which we have citations, extracts or summaries. It is mainly founded on Karl Wilhelm Ludwig Müller's previous Fragmenta Historicorum Graecorum (1841–1870).
The work was started in 1923 and continued by him till his death in 1959. The project was divided into six parts, of which only the first three were published. The first included the mythographers and the most ancient historians (authors 1-63); the second, the historians proper (authors 64–261); the third, the autobiographies, local histories and works on foreign countries (authors 262-856). Parts I-III come to fifteen volumes, but Jacoby never got to write part IV (biography and antiquarian literature) and V (historical geography). A pool of editors is currently trying to complete this task (Die Fragmente der griechischen Historiker. Continued); 200+ new entries have been published online so far (in English, German, French and Italian), with editions in print following for part IV. Meanwhile a new English-language edition of Jacoby's original work (parts I-III) has also been published online, Brill's New Jacoby (BNJ), with a completely new commentary, providing English translations of all fragments and an updated bibliography.[a]