Barrow Island may refer to:

• Barrow Island (Western Australia), Australia
• Barrow Island (Queensland), Australia
• Barrow Island, Barrow-in-Furness, England

• MicroRNA 548f-4
• Microrna 548v
• MicroRNA 548v
• Microrna 5680
• MicroRNA 5680
• Microrna 6850
• MicroRNA 6850
• Microrna 7-2
• MicroRNA 7-2
• MicroRNA 93
• Microrna 93
• MicroRNA (journal)
• Microrna let-7a-2
• MicroRNA let-7a-2
• Micrornebius
• Microsa
• Microsail
• Micro-sail
• Micro sail
• Micro Sail
• Microsarotis lucida
• MicroSat
• Micro-satellite
• Micro-satellite analysis
• Microsatellite analysis