Ad Astra Ice Cap (Danish: Ad Astra Iskappe) is an ice cap in Queen Louise Land, northeastern Greenland.

[1] Administratively it belongs to the Northeast Greenland National Park.

The ice cap was mapped during the 1952–54 British North Greenland expedition led by Commander James Simpson.

The name "Adastra Ice Cap" had been suggested by Brian Roberts, but finally "Ad Astra Ice Cap" became the approved name.

It lies in the northern sector, to the east of the lower stretch of the Admiralty Glacier.