Sophie Naylor Grubb (née , Naylor; November 28, 1834 – November 5, 1902) was a 19th-century American activist. During the civil war, she began to manifest the ability, energy and enthusiasm for activism that distinguished her through life. She published leaflets and tracts on all the issues of the temperance movement in seventeen languages, at the rate of fifty editions of 10,000 each per year. She lectured on the issue of women's suffrage, holding 75 meetings in Kansas in 1898. Grubb died in 1902.