Margery Claire Carlson (November 21, 1892 – July 5, 1985) was an American botanist and a professor at Northwestern University. After earning a Ph.D. in botany and becoming the first full-time female professor at Northwestern, she went on a number of international scientific expeditions to Central America in order to collect plant specimens and find new species. Her relationship as a research assistant at the Field Museum of Natural History meant that a majority of her plant collection was donated to the museum and a special botany collection was created for her there. Carlson had a long history of involvement in the conservation movement and was honored with multiple awards, along with a nature preserve being named after her.