Walter Blackney (1 August 1775 – 14 September 1842) was an Irish politician who served as Member of Parliament for County Carlow.
Blackney was born on 1 August 1775 as the eldest son of James Blackney of Ballycormack and Ballyellin and his wife Gertrude, née Galwey.
Blackney's father died on 28 March 1796 and thus inherited the estates, which included leasehold properties in Ballyellin and Clonmoney.
[1] Blackney did not take much part in politics until 1829 when he chaired a meeting in support of the Repeal Association.
[1] Blackney died on 14 September 1842, complaining of "violent oppression about his heart" and was succeeded by his son, Hugh.