Category:Organizations established in the 1st millennium

• Organizations established in the 1st century (2 C)
• Organizations established in the 2nd century (2 C, 1 P)
• Organizations established in the 3rd century (3 C, 1 P)
• Organizations established in the 4th century (4 C)
• Organizations established in the 5th century (4 C)
• Organizations established in the 6th century (5 C)
• Organizations established in the 7th century (4 C)
• Organizations established in the 8th century (5 C)
• Organizations established in the 9th century (6 C)
• Organizations established in the 10th century (5 C, 1 P)

E

• Educational organizations established in the 1st millennium (9 C)

H

• Hospitals established in the 1st millennium (7 C)

M

• Military units and formations established in the 1st millennium (10 C)