Princess Alexandra Therese Marie of Anhalt (4 April 1868 - 26 August 1958) was a Princess of Anhalt and member of the House of Ascania by birth.

Princess Alexandra was born on 4 April 1868 in Dessau as the youngest child of Frederick I, Duke of Anhalt and Princess Antoinette of Saxe-Altenburg.

In the late 1880s false rumours of an engagement between Prince Albert Victor of Wales and Princess Alexandra emerged when in fact the couple had never even met.

[1] In Dessau on 25 January 1897 Princess Alexandra was married to Prince Sizzo of Schwarzburg.

After their marriage the couple lived in Großharthau.