Category:1820 in Europe

• 1820 crimes in Europe (3 C)
• 1820 elections in Europe (2 C, 3 P)

/

• 1820 disestablishments in Europe (3 C)
• 1820 establishments in Europe (10 C, 2 P)

D

• 1820 in Denmark (2 C, 1 P)

E

• 1820 in England (2 C, 3 P)

F

• 1820 in France (4 C, 2 P)

G

• 1820 in the German Confederation (2 C, 1 P)
• 1820 in the Grand Duchy of Tuscany (1 C)

I

• 1820 in Iceland (1 P)
• 1820 in Ireland (1 C, 1 P)
• 1820 in Italy (2 C)

N

• 1820 in the Netherlands (1 C, 1 P)
• 1820 in Norway (2 P)

P

• 1820 in Poland (1 C)
• 1820 in Portugal (2 C, 3 P)

R

• 1820 in the Russian Empire (1 P)

S

• 1820 in Scotland (1 C, 8 P)
• 1820 in Spain (3 C, 1 P)
• 1820 in Sweden (1 C, 2 P)

T

• 1820 in the Austrian Empire (1 P)

U

• 1820 in Ukraine (1 P)
• 1820 in the United Kingdom (11 C, 10 P)

W

• 1820 in Wales (1 P)

0–9

• 1820 in the United Kingdom
• 1820 in Wales

F

• 1820 in France

G

• Gauss's Pythagorean right triangle proposal
• 1820 in Germany

I

• 1820 in Iceland
• 1820 in Ireland

P

• 1820 in Portugal

S

• 1820 in Scotland