| Osten-Sacken | |
| Type: | Noble family |
| Coat Of Arms: | Osten Sacken Fuersten Wappen Preussen.jpg |
| Coat Of Arms Caption: | Princely arms of the family |
| Founded: | 14th century |
The House of Osten-Sacken is a noble family of Baltic Germans, which belonged to German, Swedish and Russian nobility. Members of the family held the titles of Baron, Graf, Knyaz and Fürst.
The origins of the family are traced to 14th century. In 16th and 17th centuries the family members held higher positions in Courland. Many of them entered the service of Polish–Lithuanian Commonwealth, Sweden, Saxony, Prussia, the Dutch Republic, and, since the second half of the 18th century, the Russian Empire.