Mabel Besant Hope (born 1880) was a British socialist and anarchist activist.
Hope became a socialist in 1897, and in 1898 began working in the telegraph department of the Post Office.
She joined the Postal Telegraph Clerks' Association in 1901, and also became active in the Women's Trade Union League, moving to work for it full-time.
From 1906 until 1908, she served on the executive of the league, and at the 1907 Labour Party conference, she spoke in support of women's suffrage.
She became secretary of the London Council of Women Civil Servants in 1916, but soon afterwards emigrated to the United States.