| Frederick William III of Hesse | |
|---|---|
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| Head of the House of Hesse-Kassel | |
| Tenure | 14 October 1884 – 14 October 1888 |
| Predecessor | Frederick William II |
| Successor | Alexander Friedrich |
| Born | 15 October 1854 Copenhagen |
| Died | 14 October 1888 (aged 33) at sea between Batavia and Singapore |
| House | House of Hesse |
| Father | Frederick William of Hesse |
| Mother | Princess Anna of Prussia |
Frederick William (III), Landgrave of Hesse-Kassel (German: Friedrich Wilhelm Nikolaus Karl, 15 October 1854 – 14 October 1888) was (titular) Elector of Hesse-Kassel.