Look up skull and crossbones or ☠ in Wiktionary, the free dictionary.

The skull and crossbones is a symbol of a human skull with two long bones crossed below it. It was historically used on the Jolly Roger pirate flag, and sees modern-day usage as a warning against poison or other deadly hazards.

Skull and crossbones may also refer to:

• Skull and crossbones (military), in variations used by several military forces
• Skull and crossbones (fraternities and sports), used also by secret societies
• Skull and crossbones (Spanish cemetery), "campo santo", used to mark the entrances to cemeteries
• Skull & Crossbones (video game), 1987 video game by Atari Games
• U+2620 ☠ SKULL AND CROSSBONES, a Unicode code point in the Miscellaneous Symbols block

Skull and Bones may refer to:

• Skull and Bones, a secret society at Yale University
• Skull & Bones (album), by the rap group Cypress Hill
• Skull and Bones (video game), 2024 video game by Ubisoft
• Skull & Bones (band), power metal band from Argentina
• Skull and Bones (Doja Cat song), off the album Scarlet