Lieutenant-Colonel Robert Peel Dawson Spencer Chichester, DL, JP (13 August 1873 – 10 December 1921) was an Irish soldier and politician.
Chichester was the son of Lord Adolphus John Spencer Churchill Chichester (18 December 1836 – 5 March 1901, a son of the 4th Marquess of Donegall) and his wife Mary (died 1924), daughter of Robert Peel Dawson.
He gained the rank of Lieutenant-Colonel in the service of the Royal Irish Rifles.
[2] He was Justice of the Peace (JP) for Counties Donegal, Antrim and Londonderry.
He held the office of Deputy Lieutenant (DL) of Counties Donegal, Antrim and Londonderry.