Theodoric III of Isenburg-Kempenich (German: Dietrich III. von Isenburg-Kempenich) was a Lord of Isenburg-Kempenich co-ruling with his uncles Florentin and Theodoric II.
Theodoric was a son of Salentin of Isenburg-Kempenich who co-ruled with his brothers. After Salentin's death, Theodoric became a co-ruler with his uncles. Theodoric eventually outlived his uncles. He was succeeded by his son Gerard I.
| width=150px | Preceded by: | width=200px | Theodoric III | width=150px | Succeeded by: |
|---|---|---|---|---|---|
| Rosemann and Theodoric II | Lord of Isenburg-Kempenich with... Rosemann and Theodoric II | Gerard I | |||