John bar Penkaye (Syriac: ܝܘܚܢܢ ܒܪ ܦܢܟܝ̈ܐ Yōḥannān bar Penkāyē) was a writer of the late seventh century who was a member of the Church of the East.
He lived at the time of the fifth Umayyad caliph, Abd al-Malik ibn Marwan.
His surname indicates that his parents came from Feneq, on the Tigris east of Tur Abdin.
Later writers confuse him with John Saba of Dalyatha.
[1] John bar Penkaye's writings provides an eyewitness account of the early Muslim conquests of his time.