• Federalist parties by country (8 C, 1 P)

A

• Federalism in Antigua and Barbuda (3 P)
• Federalism in Argentina (3 P)
• Federalism in Australia (5 C, 30 P)
• Federalism in Austria (2 C, 7 P)
• Federalism in Austria-Hungary (3 P)

B

• Federalism in Belgium (8 P)

C

• Federalism in Canada (4 C, 78 P)
• Federalism in Chile (3 P)
• Federalism in China (1 C, 5 P)
• Federalism in the Democratic Republic of the Congo (6 P)

E

• Federalism in Ethiopia (2 C, 3 P)

G

• Federalism in Germany (2 C, 11 P)

I

• Federalism in India (5 C, 11 P)
• Federalism in Indonesia (1 C)
• Federalism in Iran (2 C, 2 P)
• Federalism in Iraq (9 P)
• Federalism in Italy (1 C, 2 P)

M

• Federalism in Malaysia (1 C, 2 P)
• Federalism in Mexico (1 C, 3 P)
• Federalism in Myanmar (2 P)

N

• Federalism in Nepal (1 C, 2 P)
• Federalism in Nigeria (2 C, 2 P)

P

• Federalism in Pakistan (2 C, 8 P)
• Federalism in the Philippines (11 P)
• Federalism in Portugal (1 P)

R

• Federalism in Russia (7 C, 9 P)

S

• Federalism in Somalia (2 C, 7 P)
• Federalism in the Soviet Union (2 C, 1 P)
• Federalism in Spain (2 C, 10 P)
• Federalism in Sri Lanka (2 C, 1 P)
• Federalism in Switzerland (6 P)
• Federalism in Syria (4 C, 1 P)

U

• Federalism in the United Kingdom (1 C, 3 P)
• Federalism in the United States (10 C, 38 P)

A

• Federalism in Antigua and Barbuda
• Federalism in Australia
• Federalism in Austria

B

• Belgian nationalism
• Politics of Belgium

C

• Federalism in Canada
• Federalism in China
• Constitutional Act on the Czechoslovak Federation

D

• Dōshūsei

E

• Éire Nua
• Eurasian Economic Community

F

• Federal Zionism
• Federalism in Switzerland
• Federalization of Buenos Aires

G

• Federalism in Germany
• Greek–Yugoslav confederation

H

• Hellenoturkism

I

• Federalism in India
• Federalism in Iraq
• Federation Council (Iraq)

M

• Majimbo
• States and federal territories of Malaysia
• Middleeuropean Initiative
• Federalism in Myanmar

N

• Federalism in Nepal
• Federalism in Nigeria

P

• Federalism in Pakistan
• Federalism in the Philippines
• Polish–Czechoslovak confederation

R

• Federalism in Russia

S

• Federalism in South Africa
• Federalism in Spain
• Spinelli Group
• Federalism in Sri Lanka
• Federalization of Syria

U

• Regionalism in Ukraine
• Union of Bulgaria and Romania
• Union of Hungary and Romania
• Federalism in the United Kingdom
• Federalism in the United States

Y

• Federalization of Yemen