Category:20th-century decades by country

0–9

• 1900s by country (6 C)
• 1910s by country (16 C)
• 1920s by country (14 C)
• 1930s by country (15 C)
• 1940s by country (23 C)
• 1950s by country (19 C)
• 1960s by country (17 C)
• 1970s by country (29 C)
• 1980s by country (36 C)
• 1990s by country (50 C)