Catherine Raisin (24 April 1855 – 12 July 1945) was a geologist and educationalist. She studied geology and zoology at University College London the year after degrees were opened up to women, was the first woman to study geology there and was the top geology graduate in 1884. After joining Bedford College for Women in 1886 she became head of the geology department in 1890, and later also the botany and geography departments. The first woman to receive the Lyell Fund award by the Geological Society of London in 1893, Raisin’s interests were mainly in microscopic petrology and mineralogy, publishing 24 papers between 1887 and 1905. She additionally founded in 1880 the Somerville Club, a discussion group for women with over 1,000 members.