Ibn Ṣaghīr/Kūjik was an eminent Karaite family in the period from the eleventh through the fifteenth century, known both from Cairo Geniza documents and from Muslim Arabic sources. Its members included several important merchants, high government officials, and prominent physicians.

According to information provided by fourteenth-century Muslim historians, the ancestor of the family was Abū ʼl-Munajjā Solomon ibn Shaʿya, a high official in twelfth-century Fatimid Egypt. The family had originated in Iran; after settling in Egypt, some of its members kep…