William Josiah Irons (12 September 1812 -18 June 1883) was a Church of England clergyman and theological writer.
The son of the Reverend Joseph Irons, he was born in Hoddesdon, Hertfordshire. He entered Queen's College, Cambridge in 1829 and graduated with a BA in 1833, an MA in 1835 a Bachelor of Divinity degree in 1842 and a Doctor in Divinity in 1854.
Following ordination he was curate of St. Mary, Newington Butts, 1835–37, vicar of St. Peter's, Walworth 1837-38, vicar of Barkway in Hertfordshire in 1838-40, vicar of Brompton 1840-70, rector of Wadingham, Lincolnshire 1878-72, rector of St. Mary Woolnoth with St. Mary Woolchurch-Haw in the City of London 1872-83.
- Irons, William Josiah. Dictionary of National Biography (1891).