Milichius is the Latinized name under which the 16th-century German scholar Jacob Milich was known historically.
It can also refer to:
Milichius (crater), a crater in the northern Mare Insularum on Earth's moon Milichius Pi, a lunar dome near Milichius crater Rima Milichius, a lunbar rille near Milichius crater Milichius, a mis-spelling of genus Meilichius in the handsome fungus beetle family