Arthur Chichester, 2nd Earl of Donegall (died October 26, 1678) was the son of Lieutenant Colonel John Chichester, of Dungannon, County Tyrone, the latter being the younger brother of Arthur Chichester, 1st Earl of Donegall. He was knighted at Whitehall in 1660, and served in the Irish House of Commons as Member of Parliament for Dungannon (1661-1666). He was also made an Irish Privy Counsellor in 1672.

In 1675 Chichester succeeded his uncle as second Earl of Donegall, inheriting the title under the special remainder granted with it to the heirs male of his grandfather, Edward Chichester, 1st Viscount Chichester. He was Custos Rotulorum for County Antrim and Governor of Carrickfergus for three years before finally dying in Ireland in 1678.