Ivan Konstantinovich Grigorovich (Russian: Иван Константинович Григорович) (26 January 1853 – 3 March 1930) served as Imperial Russia's last Naval Minister from 1911 until the onset of the 1917 revolution.

Under his effective management, the Russian Pacific squadron had no shortage of coal, munitions or any supplies during the Siege of Port Arthur.

From 1911 until the onset of revolution in 1917 he served as Russia's Naval Minister, overseeing a huge rearmament programme.

He personally visited the shipyards and the different fleets of Imperial Russia to supervise the progress of the construction of warships, and the training of crew and sailors.

He enjoyed good relationships with the Duma and used his popularity to secure huge extra funds to expand the navy.

The ashes were then flown to Saint Petersburg and buried in his family vault in the Alexander Nevsky Lavra in accordance with his will.