Edward Albert Ostermann (November 23, 1882 – May 18, 1969) was a United States Marine Corps major general who received the Medal of Honor for his actions during the U.S. occupation of Haiti.

Osterman began his military career in the United States Army in 1899, was commissioned an officer in the U.S. Marine Corps in 1907, and retired as a major general in 1943.

As the group crossed a river in a deep ravine on the night of October 24, they were suddenly fired upon from three sides by about 400 Haitian rebels, known as "Cacos", concealed in the bushes about 100 yards (91 m) from Fort Dipitie.

Because of having been "specially commended for his performance of duty in actual combat" by virtue of the award of the Medal of Honor, Ostermann was promoted to the rank of major general on the retired list.

After dark on the evening of 24 October 1915, while crossing the river in a deep ravine, the detachment was suddenly fired upon from 3 sides by about 400 Cacos concealed in bushes about 100 yards from the fort.

At daybreak, First Lieutenant Ostermann, in command of one of the three squads which advanced in three different directions, led his men forward, surprising and scattering the Cacos, and aiding in the capture of Fort Dipitie.