William Hugh Ferrar (1826–1871), a Latinist, was a classical Irish scholar at Trinity College Dublin.

In 1868, Ferrar discovered that four medieval manuscripts. Namely minuscules 13, 69, 124, and 346, were closely related texts. They are descendants of an archetype from Calabria in southern Italy or Sicily. Now they are known as Ferrar Group or Family 13.^[1]

• W. H. Ferrar, A Comparative Grammar of Sanskrit, Greek and Latin (London, 1869)
• W. H. Ferrar, A Collation of Four Important Manuscripts of the Gospels, ed. T. K. Abbott (Dublin: Macmillan & Co., 1877) - edited posthumoustly.

• Ferrar Group