John Blyth or John Blythe (before 1460 – 23 August 1499) was a medieval Bishop of Salisbury.

Blyth was Archdeacon of Richmond from 1485 to 1493^[1] and was Master of the Rolls 5 May 1492 – 13 February 1494.^{[2][dubious – discuss]} He was nominated to Salisbury on 13 November 1493 and consecrated on 23 February 1494, serving until his death five-and-a-half years later, on 23 August 1499.^[3] His brother Geoffrey was Bishop of Lichfield.^[4]

• Fryde, E. B.; Greenway, D. E.; Porter, S.; Roy, I. (1996). Handbook of British Chronology (Third revised ed.). Cambridge: Cambridge University Press. ISBN 0-521-56350-X.
• Jones, B. Fasti Ecclesiae Anglicanae 1300-1541: volume 6: Northern province (York, Carlisle and Durham): Archdeacons: Richmond. Institute for Historical Research.