Nella Bergen (December 2, 1873[a] – April 24, 1919) was an American stage actress and singer who performed in operettas on Broadway and in London at the turn into the 20th century.

Her Broadway credits included roles in The Charlatan (1898–1899), Baroness Fiddlesticks (1904), Wang (1904),[7] The Free Lance (1906–1907), The Talk of New York (1907), and He Came from Milwaukee (1910).

[1][3][8] Bergen also toured with theatrical productions, including in London performances of The Mystical Miss,[9] El Capitan[10] and The Charlatan in 1899.

"There are no creatures on earth that suffer more than the animal pets of stage folk," she told The New York Times in 1909.

Her first husband was Connecticut manufacturer James Dunn Bergen, whose surname she used professionally; they married in 1892 and divorced in 1899.