Adele Marion Fielde (born Adelia Field) (March 30, 1839 – February 23, 1916) was a social activist, Baptist missionary, scientist, and writer. She was born in East Rodman, New York on March 30, 1839 to Leighton Field and Sophia Field. She graduated from New York State Normal School in Albany in 1860. In 1894, after the defeat of the women's suffrage amendment to the New York State constitution, Fielde was one of six prominent suffragists who founded the League for Political Education.