| Heinrich XI | |
|---|---|
| Prince Reuss-Greiz | |
.jpg) Prince Heinrich XI ca. 1750 | |
| Reign | 12 May 1778-28 June 1800 |
| Born | 18 March 1722 Greiz, Reuss |
| Died | 28 June 1800 (aged 78) Greiz, Reuss Elder Line |
| Spouse | Countess Conradine Reuss-Köstritz Countess Alexandrine of Leiningen-Dagsburg-Heidesheim |
| Issue | Count Heinrich XII Countess Amalie Heinrich XIII, Prince Reuss of Greiz Friederike, Princess of Hohenlohe-Kirchberg Prince Heinrich XIV Prince Heinrich XV Isabelle Auguste, Countess of Hachenburg Countess Marie Viktoria, Princess of Isenburg and Büdingen in Birstein Count Heinrich XVI Prince Heinrich XVII |
| House | House Reuss of Greiz |
| Father | Count Heinrich II Reuss-Obergreiz |
| Mother | Countess Sophie Charlotte von Bothmer |
Heinrich XI, Prince Reuss of Greiz (German: Heinrich XI Fürst Reuß zu Greiz; 18 March 1722 – 28 June 1800) was the first Prince Reuss of Greiz from 1778 to 1800.