Zara Eileen Hore-Ruthven, Countess of Gowrie (20 January 1879 – 19 July 1965) was the Irish-born wife of the 1st Earl of Gowrie, Governor of South Australia 1928-34, Governor of New South Wales 1935-36 and the longest serving Governor-General of Australia 1936-44. She was renowned for her work in promoting the welfare of children in Australia, and the Lady Gowrie Child Centres were named in her honour.
Zara Eileen Pollok was born near Ballinasloe, County Galway, Ireland in 1879, the daughter of John Pollok and his wife the Honourable Florence Madeline, née Bingham, daughter of the 4th Baron Clanmorris. She studied music in Vienna when she was young.
On 1 June 1908 at St George's, Hanover Square, she married Alexander Hore-Ruthven, over the objections of her family, who considered him "the impecunious son of an impoverished family, with indifferent prospects". The following month they came to Australia, where he took up the post of military secretary to Lord Dudley, the Governor-General. He had previously served as aide-de-camp to Lord Dudley when he was Lord Lieutenant of Ireland. In 1928 he was appointed Governor of South Australia and was knighted, she becoming Lady Hore-Ruthven.
In January 1935 he became Governor of New South Wales, and in January 1936 Governor-General. He had earlier been elevated to the peerage as Baron Gowrie of Canberra and Dirleton, and she became Baroness Gowrie.