Category:20th-century mass shootings in the United States

0–9

• 1990s mass shootings in the United States (1 P)
• 1980s mass shootings in the United States (empty)
• 1970s mass shootings in the United States (empty)
• 1960s mass shootings in the United States (empty)
• 1920s mass shootings in the United States (2 P)
• 1930s mass shootings in the United States (empty)
• 1940s mass shootings in the United States (empty)
• 1950s mass shootings in the United States (empty)