• 1820s establishments by continent‎ (17 C)
• 1820s establishments by country‎ (116 C)

0–9

• 1820 establishments‎ (13 C, 2 P)
• 1821 establishments‎ (13 C)
• 1822 establishments‎ (12 C)
• 1823 establishments‎ (11 C)
• 1824 establishments‎ (11 C, 4 P)
• 1825 establishments‎ (11 C)
• 1826 establishments‎ (12 C)
• 1827 establishments‎ (13 C, 2 P)
• 1828 establishments‎ (13 C, 2 P)
• 1829 establishments‎ (15 C, 2 P)

A

• Awards established in the 1820s‎ (7 C)

B

• Buildings and structures completed in the 1820s‎ (18 C, 1 P)

C

• Cemeteries established in the 1820s‎ (47 P)

E

• Educational institutions established in the 1820s‎ (10 C, 3 P)
• Energy companies established in the 1820s‎ (5 C)
• Event venues established in the 1820s‎ (9 C)

H

• Hotels established in the 1820s‎ (8 C)

M

• Military installations established in the 1820s‎ (3 C)
• Military units and formations established in the 1820s‎ (10 C, 2 P)

N

• Noble titles created in the 1820s‎ (9 C)

O

• Organizations established in the 1820s‎ (23 C)

P

• Populated places established in the 1820s‎ (10 C, 11 P)
• Publications established in the 1820s‎ (12 C, 3 P)

R

• Railway stations opened in the 1820s‎ (4 C)
• Recurring events established in the 1820s‎ (12 C)

S

• States and territories established in the 1820s‎ (10 C)
• Student organizations established in the 1820s‎ (5 C)