Prince Frederick William of Hesse-Kassel
| Frederick William II | |
|---|---|
| Landgrave of Hesse | |
| Head of the House of Hesse-Kassel | |
| Tenure | 6 January 1875 – 14 October 1884 |
| Predecessor | Frederick William I |
| Successor | Frederick William III |
| Born | 26 November 1820 |
| Died | 14 October 1884 (aged 63) |
| Spouse | |
| Issue | Prince Wilhelm Frederick William III, Landgrave of Hesse Elisabeth, Hereditary Princess of Anhalt Alexander Frederick, Landgrave of Hesse Frederick Charles, Landgrave of Hesse Princess Marie-Polyxene Sybille, Baroness Friedrich of Vincke |
| House | Hesse-Kassel (agnatic) Oldenburg (cognatic) |
| Father | Prince William of Hesse-Kassel |
| Mother | Princess Charlotte of Denmark |
Frederick William George Adolphus, Landgrave of Hesse (German: Friedrich Wilhelm Georg Adolf von Hessen-Kassel; 26 November 1820 – 14 October 1884) was the only son of Wilhelm I, Landgrave of Hesse-Kassel-Rumpenheim and Princess Louise Charlotte of Denmark.