Dame Rosemary Anne Horton DNZM QSO QSM (née Moon; 25 March 1940 – 14 May 2023) was a New Zealand philanthropist.

Horton was born in Christchurch on 25 March 1940 to Olga (known as Bill) and Ellis Moon and grew up in Ashburton.

[1][3] In her late 20s, Horton worked in the library at UEB, a large corporate business in Auckland.

[4] She was also the founding chair of the New Zealand Breast Cancer Foundation, and had contributed to Women's Refuge, the SPCA and the Salvation Army.

[11] In the 2011 Queen's Birthday Honours, she was made a Dame Companion of the New Zealand Order of Merit, for services to philanthropy.