456 (disambiguation)

• 4, 5, 6
• 4,5,6
• 456
• 456 (album)
• 456 BC
• British Rail Class 456
• Cee-lo
• Ferrari 456
• IRT Lexington Avenue Line
• List of Doctor Who universe creatures and aliens (0–9, A–G)
• Seong Gi-hun
• Squid Game