- Source: Theodoric III of Isenburg-Kempenich
- Theodoric III of Isenburg-Kempenich
- Isenburg-Kempenich
- County of Isenburg
- Dietrich III
- Rosemann
- List of nobles and magnates within the Holy Roman Empire in the 13th century
- List of state leaders in the 12th-century Holy Roman Empire
- List of state leaders in the 13th-century Holy Roman Empire
- List of state leaders in the 14th-century Holy Roman Empire
- List of state leaders in the 15th-century Holy Roman Empire
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.