Sir William Bird (1560 or 1561–1624) was a lawyer, Member of Parliament for Oxford University and Dean of the Court of Arches but who was accused in Parliament of taking improper fees.
Bird was born in Saffron Walden, Essex and matriculated at All Souls College, Oxford on 28 November 1581 aged 20, having become a Fellow in 1578.
He was also acting Vice-Chancellor of Oxford University in 1591 and dean of All Souls College in 1593.
He was also a Master in Chancery but was one of four masters accused in the Parliament of 1621 of taking improper fees, although they argued that the statute relied upon by their accusers was not intended to deprive them of their fees.
He was buried on 5 September 1624 in Christ Church, Newgate, London.