This paper will summarise our current knowledge of the translations of Ptolemy's Almagest into Latin in the Middle Ages, including especially the latest research on the 'Dresden Almagest' by Dirk Grupe, and my own research on the 'Sicilian Almagest' attributed, confusingly, to Hermann of Carinthia. Also included is the Almagestum Parvum, the earliest Theorica planetarum and the 30 Chapters of al-Farghani, which, together with the translations of the Almagest itself, establishes the basis for Ptolemaic astronomy in the Middle Ages.