Sarah "Sallie" Middleton Robbins Broadhead (1831–1910) was a teacher, diarist, and resident of Gettysburg, Pennsylvania during the Battle of Gettysburg. She was the author of The Diary of a Lady of Gettysburg, Pennsylvania from June 15 to July 15, 1863, which is a primary historical source for what happened during the battle and especially how it impacted the residents of the borough. It has been called the most comprehensive written document on the role of women in the Civil War. Ken Burns quoted entries from the diary in his 1990 documentary series, The Civil War.