Jeannette Leonard Gilder (pen name, Brunswick; October 3, 1849 – January 17, 1916) was an American author, journalist, critic, and editor.

Gilder was educated at St. Thomas Hall (woman's collegiate), conducted by her father;[1][2] and studied at a boarding school in South Jersey for a year or two.

[4] Disliking the occupational options commonly open to women, she instead started working as a researcher for a historian during the Civil War before turning to the periodical industry.

In an article titled "Why I Am Opposed to Woman Suffrage", printed in May 1894 in Harper's Bazaar, she argued that women were not strong enough to participate in politics.

[1][2] Gilder died at her home in New York on January 17, 1916, at the age of 66, after a stroke brought on by a formation of a blood clot on the brain.