Bashar (or Bishr) ben Phinehas ibn Shu'aib was a tenth century Jewish mathematician.[1]
According to Hottinger (Promptuarium, p. 96), the Arabic works of Ibn Shu'aib are often quoted by Arabic writers. In 997, Abu 'Ali 'Isa ibn Zara'ah addressed to Ibn Shu'aib a pamphlet against Judaism which seemed to be an answer to a pro-Jewish work by Ibn Shu'aib (see Ibn Abi Uṣaibi'a, Uyun al-Anba, ii. 236).