Ella Lyman Cabot (née Lyman; February 26, 1866 – September 20, 1934) was an American philosopher of ethics for children, who worked as an educator, lecturer and writer. She was born into a prominent Unitarian family in Boston and was the fourth of seven children. Her parents, Ella (Lowell) Lyman and Arthur Theodore Lyman, owned a family estate in Waltham, Massachusetts.