Category:20th century in Western Australia

• 1900s in Western Australia (1 C, 7 P)
• 1910s in Western Australia (2 C, 10 P)
• 1920s in Western Australia (1 C, 8 P)
• 1930s in Western Australia (12 P)
• 1940s in Western Australia (2 C, 13 P)
• 1950s in Western Australia (1 C, 8 P)
• 1960s in Western Australia (1 C, 9 P)
• 1970s in Western Australia (2 C, 7 P)
• 1980s in Western Australia (1 C, 14 P)
• 1990s in Western Australia (1 C, 15 P)

P

• 20th century in Perth, Western Australia (7 C)