Ostrum

Ostrum may refer to:


 * Östrum, a village in the southern part of Bad Salzdetfurth in Lower Saxony, Germany
 * Ostrum (dragon), a fictional dragon in Dragonaut: The Resonance
 * Peter Ostrum (born 1957), American large animal veterinarian and former child actor
 * Ostrum Asset Management, a France-based asset manager