The Order of Ernst August (German: Ernst-August-Orden) was founded 15 December 1865 by King George V of Hanover in memory of his father Ernest Augustus, King of Hanover.

Seventeen Hanoverian and twenty five foreign Grand Crosses are recorded.

At the center is a medallion of red enamel with the monogram of Ernest Augustus (EA), and around, there was a band of blue enamel with the motto of the order "SUSCIPERE ET FINIRE" in gold.

The back displays the founding date "DEC MDCCCLXV XV" with the initials of the king who had granted the order George V ("G").

The ribbon is scarlet red with two dark blue stripes parallel to each side.