| Honorific Prefix: | The Right Honourable |
| The Lord Templemore | |
| Office: | Member of Parliament for County Wexford |
| Term Start: | 1830 |
| Term End: | 1831 |
| Predecessor: | Robert Carew Viscount Stopford |
| Alongside: | Viscount Valentia, Henry Lambert |
| Successor: | Robert Carew Henry Lambert |
| Office1: | Member of Parliament for Milborne Port |
| Term Start1: | 1826 |
| Term End1: | 1830 |
| Predecessor1: | Thomas Graves Hon. Berkeley Paget |
| Alongside1: | Thomas Graves, John Henry North |
| Successor1: | George Byng William Sturges Bourne |
| Birth Name: | Arthur Chichester |
| Birth Date: | 8 January 1797 |
| Birth Place: | Westminster, London |
| Death Place: | Coombe Bank, Kent |
| Nationality: | Anglo-Irish |
| Education: | Brasenose College, Oxford |
| Parents: | Lord Spencer Chichester Lady Anne Harriet Stewart |
| Children: | 7 |
Arthur Chichester, 1st Baron Templemore (8 January 1797 – 26 September 1837) was a British soldier, politician and courtier.
Chichester was born in Westminster, London,[1] the eldest, and only surviving, son of Lord Spencer Chichester of Dunbrody Park (himself the third son of the 1st Marquess of Donegall) and Lady Anne Harriet Stewart (a daughter of the 7th Earl of Galloway).[2]
He was educated in England at Harrow School from 1808 to 1813 before matriculating at Brasenose College, Oxford in 1815.
He entered the British Army, serving with the 2nd Life Guards and eventually attaining the rank of lieutenant colonel in 1827.[2]
In 1826 Chichester was elected Whig Member of Parliament for Milborne Port, a seat he held for four years before becoming representative for County Wexford in 1830.
The following year, on the occasion of the coronation of William IV, he was raised to the peerage as Baron Templemore, of Templemore in the County of Donegal ("Templemore" refers to the civil parish in the city of Derry, Northern Ireland).[3] He was also made a Gentleman of the Bedchamber in 1835, and in 1837 succeeded this appointment as a Lord in Waiting.[2]
On 27 July 1820, Chichester married Lady Augusta Paget, daughter of Henry Paget, 1st Marquess of Anglesey and Lady Caroline Elizabeth Villiers. Together, they had five sons and two daughters, including:[2]
Lord Templemore died after a short illness on 26 September 1837, aged 40, at his home of Coombe Bank, Kent, and was buried at nearby Sundridge. His wife outlived him by thirty-five years, dying in 1872.