Benjamin Ferrey was an English architect who worked mostly in the Gothic Revival.

Benjamin Ferrey was the youngest son of Benjamin Ferrey Snr (1779–1847), a draper who became Mayor of Christchurch, then in Hampshire, and his wife Ann Pillgrem (1773–1824). He was educated at Wimborne Grammar School.

Ferrey married twice. On 26 April 1836 at Islington, he married Ann Mary (Annie) Lucas (1812–1871). They had five children: Alicia (1838–1924), Ellen (1840–41), Eleanor Mary (1842–45), Benjamin Edmund (1845–1900) and Annie (1847–1926). Benjamin Edmund or Edmund Benjamin also became an architect, studying under his father and then assisting in his work.

After the death of his first wife in 1871, he married a second time, in 1872 at Weymouth, Dorset to Emily Hopkinson (1829–1922).

Ferrey died on 22 August 1880 at his London home.