1B

• 1,000,000,000 (number)
• Alpha-1B adrenergic receptor
• Arginine vasopressin receptor 1B
• Axle arrangement
• B1 (disambiguation)
• Billion
• Escape character
• First baseman
• GCR Class 1B
• Interferon beta-1b
• Melatonin receptor 1B
• National Highway 1B (India, old numbering)
• Single (baseball)