Annie Denton Cridge (1825–1875) was a UK-born suffragist, socialist, lecturer, and author. She moved to the United States around 1842 during the industrial and Victorian eras. Cridge was an author who wrote primarily about women's rights and spiritualism. In the mid-nineteenth century, spiritualism was considered the only religious group that recognized the equality of women. Ann Braude, in her book, Radical Spirits, defines spiritualism as “a new religious movement aimed at proving the immortality of the soul by establishing communication with the spirits of the dead… It provided an alternative to the established religious order. It held two attractions to thousands of Americans: rebellion against death and rebellion against authority”.