Albert Gustav Winterhalter (October 5, 1856 – June 5, 1920) was an admiral in the United States Navy.

Miller, Commander in Chief Pacific Station, Winterhalter personally arranged the hoisting of the American flag at the ceremonies attending the transfer of sovereignty of the Hawaiian Islands to the United States.

In 1916, Winterhalter conducted experiments aboard the armored cruiser USS Washington to evaluate acoustic ranging techniques.

During World War I, Winterhalter served as a member of the General Board of the Navy in advising the Department upon many matters of great importance relating to the conduct of the war and was decorated with the Navy Distinguished Service Medal for his service.

[2] He died of lobar pneumonia on June 5, 1920, in Washington, D.C., at the United States Naval Hospital.