Noctua orbona, the lunar yellow underwing, is a moth of the family Noctuoidea.

In Asia, the southern records extend from Turkey, Syria, Lebanon, Iraq and questionably to Iran, Afghanistan and northern India.

The distribution area in the East Palearctic includes Kazakhstan, Turkmenistan, Tajikistan, Kyrgyzstan and Uzbekistan.

It resembles Noctua comes but has a constant and characteristic ink black spot on the costa near the apex of the forewing.

The caterpillar is lighter coloured on the sides with a wide reddish grey lateral stripe.