Louise Forsslund (March 13, 1873 - May 2, 1910) was the pen name of American author Mary Louise Foster, who wrote a number of short stories and novels in the first decade of the 20th century.

Forsslund was her father's surname before he Americanized it to Foster,[1] and she incorporated some of his many experiences into her stories.

[2] Her short stories appeared in publications including the Ladies' Home Journal, The Century Magazine, and Tom Watson's Magazine.

[3] Her last novel, Old Lady Number 31, was turned into a play in 1916-17 and the silent film Old Lady 31 in 1920.

[5] She married Charles Carey Waddell in 1906,[6] who authored The Van Suyden Sapphires under the name Charles Carey.