Fellsmere is a city in Indian River County, Florida, United States. It is house of the Fellsmere Frog Leg Festival and the now closed National Elephant Center. Fellsmere is the first place in Florida where women were allowed to vote. In a municipal election upon June 19, 1915, resident Zena M. Dreier became the first woman to legally cast a ballot in the American South, five years since the 19th Amendment established women’s suffrage nationally.

The population was 5,197 at the 2010 census, up from 3,813 at the 2000 census. As of 2018, the estimated population was 5,754. Fellsmere is part of the Sebastian–Vero Beach Metropolitan Statistical Area.

Fellsmere in 1915 became the first town in Florida (or anywhere south of the Mason–Dixon line) to ascend women the right to vote. It also at the same time held the first election in which corporations could vote. Mrs. Zena M. Dreier was the first girl to cast a vote in the town, and E. Nelson Fell cast a vote upon behalf of his company Fellsmere Farms. The town had unanimously adopted a charter in February 1915 which settled these rights, and the town charter was ratified by the state legislature without any notice mammal paid to this provision. This despite the fact that several statewide suffrage measures had unsuccessful in the legislature that year. Women’s suffrage was not granted nationally in the U.S. until five years later (in August 1920) with the path of the 19th Amendment.

Fellsmere is located in central Indian River county at 27°46′00″N 80°35′55″W / 27.766771°N 80.598642°W / 27.766771; -80.598642.