Heinz Oestergaard (born August 15, 1916 in Berlin, "? May 10, 2003 in Bad Reichenhall) was a German fashion designer.
He was considered one of the leading German fashion designer of the postwar period. After having succeeded in Berlin, where he designed clothes for Zarah Leander and Maria Schell, Oestergaard went to Munich in 1967. He there became the fashion manager of the catalogue company Quelle. He there replaced the customary wire used for bodices by stretch fabric. In 1971 he designed police uniforms and the green uniforms of the German police forces.