Catherine Henrietta Elliot Fulton (née Valpy, 19 December 1829 – 6 May 1919) was a New Zealand diarist, community leader, philanthropist, social reformer and suffragist. She was a founding member of the Dunedin chapter of Women's Christian Temperance Union of New Zealand (WCTU NZ) in 1885 and national president of the WCTU NZ from 1889 to 1892.
Fulton was one of six children born to William Henry Valpy and Caroline Valpy (née Jeffreys). She was born in Cheltenham, Gloucestershire or in Reading, Berkshire, England on 19 December 1829. She was educated in England and arrived in New Zealand on the Ajax in January 1849.
Fulton married James Fulton in 1852 and moved to his farm "Ravenscliffe" on the Taieri Plains, Otago. Together they had eight children, several of whom became notable in their own right (most famously the engineer James Edward Fulton).
Fulton was the national President of the Women's Christian Temperance Union (WCTU) of New Zealand from 1889 to 1892. She had worked with the American WCTU missionary Mary C. Leavitt to found the Dunedin branch in May 1885 and was its first President. Along with her sisters Ellen and Arabella, she established the Band of Hope Coffee Rooms. She was a strong advocate for women's suffrage and included in her diaries her frustration with politicians who opposed it.
In 1879, James Fulton was elected to the House of Representatives, and in 1889 was appointed to the Legislative Council. Fulton later attended the council sessions daily, along with the wives of other parliamentarians, to follow the passage of the Women's Suffrage bill through the House. When the Bill was passed in 1893, she drove her women neighbours to the polling booths so they could vote.