Xena Longenová (3 August 1891 – 23 May 1928), born Polyxena Marková, was a Czechoslovak actress, best known on the Prague stage.

Longenová was a popular stage actress, often appearing with her actor husband in Prague cabarets, but also in Paris, Berlin, Brno, and Ljubljana.

[1][2] She created the lead role in her husband's adaptation of Egon Erwin Kisch's The Ascension of Tonka Šibenice.

[3] She appeared in one silent film, a comedy, Prach a broky (1926, now lost).

[5][6] Longenová, unhappy in her marriage and using cocaine and morphine, died by suicide in 1928, aged 36 years, in Prague.