Assen Hartenau
| Assen Hartenau | |
|---|---|
| Count of Hartenau | |
| Assen Hartenau in 1894 (aged 3–4) | |
| Born | 16 January 1890 Graz, Austria-Hungary | 
| Died | 15 March 1965 (aged 75) Vienna, Austria | 
| Spouse | Bertha Hussa-Lamos | 
| Issue | Wilhelm Hartenau | 
| House | Battenberg | 
| Father | Alexander of Battenberg | 
| Mother | Johanna Loisinger | 
Assen or Asen Hartenau (16 January 1890 – 15 March 1965), in his early life styled as the Count of Hartenau, was an Austrian civil servant and the son of the deposed Bulgarian prince Alexander of Battenberg (r. 1879–1886).