| Office: | Senator |
| Term Start: | 1 October 1954 |
| Term End: | 22 May 1957 |
| Constituency: | Nominated by the Taoiseach |
| Birth Date: | 29 April 1912 |
| Birth Place: | Dublin, Ireland |
| Party: | Independent |
| Children: | 3 |
| Father: | James G. Douglas |
John Harold Douglas (29 April 1912 – 1982) was an Irish politician and an independent member of Seanad Éireann. He was nominated by the Taoiseach to the 8th Seanad on 1 October 1954, replacing his deceased father James G. Douglas.[1] [2]
Douglas was a Quaker like his father, and succeeded him as managing director of the family linen and clothing companies.[3] On 2 September 1941, he married Hazel Malcolm (c.1915–8 September 2009);[4] they had three children.[5]