Jeannette Leonard Gilder (3 October 1849 – 17 January 1916) was a pioneer for United States women in journalism.
She was a daughter of the clergyman William Henry Gilder. She was connected from 1869 with various newspapers in Newark and New York. She also worked for The Boston Evening Transcript writing under the pen name "Brunswick." Gilder was the New York Correspondent of the Transcript. In 1881, she helped to co-found The Critic, a literary magazine that was merged with the third incarnation of Putnam's Magazine in 1906.
Gilder was associated with her brother, Richard Watson Gilder, in the editorship of Scribner's Monthly (later called the Century), and was joint editor with her brother Joseph Benson Gilder of the Critic from 1881 to 1906. Another brother was the explorer William Henry Gilder.
- Representative Poems by Living Persons (1886)
- Pen Portraits of Literary Women (1887)
- Essays from the Critic (1882)
- Authors at Home (1889)
- Why I am opposed to woman suffrage. Boston: Massachusetts Association Opposed to the Extension of Suffrage to Women, [1894?].
- The Autobiography of a Tomboy. New York: Doubleday, Page, & Co. (1900)
- The Tomboy at Work (1904)