Dedi III | |
|---|---|
| Margrave of Lusatia | |
 Tomb of Dedo, with his wife Matilda next to him, on the left | |
| Reign | 1185–1190 |
| Predecessor | Theodoric I |
| Successor | Conrad II |
| Born | c. 1130 |
| Died | 16 August 1190 |
| Buried | Wechselburg Priory |
| Noble family | House of Wettin |
| Spouse(s) | Matilda of Heinsberg |
| Issue Detail | |
| Father | Conrad I, Margrave of Meissen |
| Mother | Luitgard of Elchingen Ravenstein |
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Dedi III (German: Dedo), nicknamed the Fat (c. 1130 – 16 August 1190), a member of the House of Wettin, was Margrave of Lusatia from 1185 until his death.