N5

• 5 nanometer
• 5N (disambiguation)
• Japanese-Language Proficiency Test
• LNER Class N5
• List of Spokane, Portland and Seattle Railway locomotives
• London Buses route N5
• N postcode area
• N05 (disambiguation)
• N5 (song)
• Nexus 5
• Norristown High Speed Line
• Number Five (disambiguation)
• Pentazenium
• USS N-5 (SS-57)