Pseudo-Ptolemy

Pseudo-Ptolemy is a designation used for the authors of pseudepigrapha that appeared under the name of the astronomer and geographer Ptolemy. These are not authentic works of Ptolemy but were either forged in his name or were mistakenly taken to be his. Although Ptolemy wrote in Greek, Pseudo-Ptolemaic works are sometimes known only from translations or purported translations in Arabic and Latin. Many are of medieval origin.

Works in Greek

• Centiloquium, a Latin translation from the Arabic Kitab al-Thamara, with the Greek version Karpos being either the original or a translation from Arabic
• De speculis, translated from a Greek original by William of Moerbeke
• De temporum mutatione, a translation from Greek often included as a chapter of the Latin Judicia
• Musica

Works in both Arabic and Latin

• Maqala fi Dhawat al-dhawa'ib, known in Latin as De cometis, a work on the nine types of comets
• Opus imaginum or De imaginibus super facies signorum, the fragmentary Arabic Kitab al-Suwar

Arabic pseudepigrapha

• al-Du'a' al-mustajab
• Ahkam al-shi'ra l-yamaniyya
• Kitab al-Ahjar
• Kitab al-Majalis
• Kitab Tali' al-mawlud mukhtasar li-l-rijal wa-l-nisa, jointly attributed to Ptolemy and "those wise Indians who are with him"
• Taqwim al-shi'ra l-yamaniyya, jointly attributed to Ptolemy, Hermes Trismegistus and al-Hakimi
• Tawali' al-buruj, jointly attributed to Ptolemy and Balaam