Eva Charlotta Carolina Dahlgren (23 April 1851 – 14 January 1934) was a Swedish writer, journalist, newspaper editor, feminist, and suffragist.

Dahlgren's mother Ulrica "Ulla" von Heland was the niece of writer, historian, and poet Erik Gustaf Geijer.

In 1887, she became a board member of the Fredrika Bremer Association (FBF), the oldest women's rights organisation in Sweden.

In 1891, she became an editor of the association's journal, Dagny – a magazine focusing on women's rights, gender roles, and feminism in Sweden, and remained on its board till 1907.

Värmländska släktminnen från adertonhundratalets förra hälft upptecknade, published in 1905, was a major breakthrough in her literary career.

As an admirer of feminist reformer Fredrika Bremer (1801–1865), Dahlgren's works focused on presenting the cultural history of her hometown Värmland, and writing accounts on women.