Just Michael Aagaard (17 July 1757 – 7 October 1819) was a Danish merchant and konditori-owner in Copenhagen.

He was the father of Holger Halling Aagaard and owned Iselingen at Vordingborg from 1806.

Aagaard moved to Copenhagen where he became a baker and also opened a grocery store.

[1] In 1804, together with Mayor of Copenhagen Iver Qvistgaard, Peder Bech, and Hans Wassard, Aagaard established a consortium which acquired the manors of Iselingen and Marienlyst at Vordingborg.

Aagaard became the sole owner of Iselingen in 1806 while Wassard acquired full ownership of Marienlyst in 1810.