The Silurian is the geological period and system lasting roughly from 445 million years ago to 415 million years ago.

Silurian may also refer to:

• Silurian, the society, culture, language, and ethnicity of the Silures, an ancient Welsh tribe
• Silurian, the racehorse that won the 1923 Doncaster Cup
• Silurian Press Club, the society established at 1924 by a group of maverick Park Row newspaper veterans
• Silurian (Doctor Who), a fictional race of humanoid reptiles who existed before humanity
• Silurian hypothesis, a thought experiment that speculates if a prior advanced civilization on Earth would leave behind present day evidence of its existence
• Silurian Hills, a small range of hills in the Mojave Desert
• Siluria Technologies, a San Francisco-based technology company
• Eriopygodes imbecilla, the Silurian, a moth of the family Noctuidae

This disambiguation page lists articles associated with the title Silurian.
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