William Wilberforce (21 July 1798 – 26 May 1879) was a British lawyer, the eldest son of William Wilberforce. He was briefly a Member of Parliament in 1837–38.

Wilberforce was born in Clapham on 21 July 1798 to William Wilberforce, a member of Parliament and prominent abolitionist campaigner, and his wife Barbara Wilberforce. He was their eldest child.^[1] He was educated at a school in Cambridgeshire before attending Trinity College, Cambridge in 1817–1820, and was then admitted to study at the Middle Temple. He was called to the Bar in 1825.^[1]

He was a Justice of the Peace for Yorkshire and for Middlesex, and at the 1837 general election was returned as a Conservative for Kingston upon Hull, a seat his father had represented in the 1780s, but this was overturned by an election petition the following year.^[1] He did not return to Parliament, though he contested Taunton in the 1841 general election, and Bradford in a subsequent by-election.^[2]

In 1850, Wilberforce converted to Catholicism,^[1] along with his youngest brother, Henry, a parson in Kent.^[3] Four years later, a third brother, Robert, would also resign his Anglican archdeaconry and follow them.^[4]

Wilberforce married in 1820 Mary Frances Owen, daughter of John Owen (1766–1822).^[1] His sister and brother in law through Mary Owen were Esther Owen (1804–1871) and Nathaniel Wells.^[5]