John Russell, Viscount Amberley (10 December 1842 – 9 January 1876), was a British politician and writer. He was the eldest son of John Russell, who twice served as Prime Minister of the United Kingdom, and father of the philosopher Bertrand Russell. Amberley is known for his unorthodox views on religion and for his active support of birth control and women's suffrage, which contributed to the end of his short career as Liberal Member of Parliament.
John Russell was born on 10 December 1842 at Chesham Place, London, the first son of Lord John Russell, himself the son of the 6th Duke of Bedford. His mother was Lord Russell's second wife, Lady Frances, daughter of the 2nd Earl of Minto. In 1846, his father became Prime Minister of the United Kingdom and served as such twice. Due to Lord John's elevation to peerage as Earl Russell in 1861, his son and heir apparent became known as Viscount Amberley.
After a home education, he was sent to Harrow School. He was an exceptionally studious boy and his performance at school pleased his father. He later attended the University of Edinburgh and Trinity College, Cambridge. At Cambridge, he formed a close and lasting friendship with T. J. Cobden-Sanderson, who shared his religious views. Both left Cambridge without taking a degree; Amberley's departure in February 1863 was due to his dislike for Cambridge's social tone and focus on mathematics.