1C

1C or 1c may also refer to:

• 1C Company, Russian software company
• 1 Cup (unit)
• California Proposition 1C (2009), a defeated California ballot proposition
• Cent (currency)
• 1 cent euro coins
• Penny (United States coin)
• Penny (Irish decimal coin)
• expression of genome size
• First Cambridge Catalogue of Radio Sources
• measure of charge rate for an electric battery
• National Highway 1C, an Indian highway