Heinrich XX, Prince Reuss of Greiz
| Heinrich XX | |
|---|---|
| Prince Reuss of Greiz | |
Lithograph by G. Weinhold, 1841.  | |
| Prince of Greiz | |
| Reign | 1836 - 1859 | 
| Predecessor | Prince Heinrich XIX | 
| Successor | Prince Heinrich XXII | 
| Born | 29 June 1794 Offenbach, Landgraviate of Hesse-Darmstadt  | 
| Died | 8 November 1859 (aged 65) Greiz, Principality of Reuss-Greiz  | 
| Spouse | Princess Sophie of Löwenstein-Wertheim-Rosenberg Princess Caroline of Hesse-Homburg  | 
| Issue | Princess Christiane Prince Heinrich XXI Prince Heinrich XXII, Prince of Reuss-Greiz Prince Heinrich XXIII Princess Marie, Countess of Ysenburg and Büdingen-Meerholz  | 
| House | House Reuss of Greiz | 
| Father | Heinrich XIII, Prince Reuss of Greiz | 
| Mother | Princess Wilhelmine Louise of Nassau-Weilburg | 
Heinrich XX, Prince Reuss of Greiz (German: Heinrich XX Fürst Reuß zu Greiz; 29 June 1794 – 8 November 1859) was Prince Reuss of Greiz from 1836 to 1859.