Gunpowder most commonly refers to:

• Black powder, a propellant used in early firearms
• Smokeless powder, a propellant used in modern firearms

Gunpowder may also refer to:

• "Gunpowder" (song), by Wyclef Jean
• Gunpowder (TV series), a 2017 British historical drama television series
• Gunpowder, a character in the media franchise, The Boys

• Gunpowder, Queensland, Australia
• Gunpowder River, Maryland, U.S.
• Gunpowder Town, an abandoned town, now Joppatowne, Maryland, U.S.

• Gunpowder tea, a form of Chinese tea
• A slang term for the South Asian spice mix idli podi or milagai podi.

• Gunpowder empires
• Gunpowder Incident
• Gunpowder mill, where gunpowder is manufactured
• Gunpowder Plot