Gustav Heinrich Ernst Friedrich von Ingenohl (30 June 1857 – 19 December 1933) was a German admiral from Neuwied best known for his command of the German High Seas Fleet at the beginning of World War I.

He commanded the gunboat Iltis from 1894 to 1896, aboard which he observed the First Sino-Japanese War in 1895.

His intention of engaging the British Royal Navy in a quick, decisive battle was not supported by the German admiralty.

The intended result did not materialize; in the first combat of this kind on 28 August 1914 at the Battle of Heligoland Bight, the German Imperial Navy (Kaiserliche Marine) lost three light cruisers and a torpedo boat to Royal Navy ships.

After a similarly unsuccessful action on the Dogger Bank on 24 January 1915, Ingenohl yielded command of the High Seas Fleet on 2 February and was succeeded by Admiral Hugo von Pohl.