Sir John Holker (1828 – 24 May 1882) was a British lawyer, politician, and judge.
After being articled to a solicitor, he was called to the bar at Gray's Inn in 1854, where he was later a bencher, and treasurer in 1875.
He returned to London in 1864, where he developed a very successful and lucrative legal practice, and was appointed Queen's Counsel in 1866.
He was appointed a Lord Justice of Appeal in January 1882, but resigned due to ill health in May, and died in London a few days later.
This article about a Conservative Member of the Parliament of the United Kingdom representing an English constituency and born in the 1820s is a stub.