Erau or ERAU may refer to:

• Erau, an Indonesian cultural festival

• Embry–Riddle Aeronautical University, a university with campuses in Daytona Beach, Florida and Prescott, Arizona, United States

• Eesti Raadioamatööride Ühing, an amateur radio organization in Estonia

Hérault (), a department in Occitania, southern France

• Hérault (river) (), a river flowing through the department