DB1 may refer to:

• Aston Martin 2-Litre Sports, an English sports car.
• Dark Beginning 1, a Yu-Gi-Oh! Trading Card Game booster pack.
• db1.mdb is the default file name for databases created in Microsoft Access versions up to 2003.

• Jacoby, David
• Jacoby, James
• Jacoby, Jeff
• Jacoby, Mark
• Jacob Youde William Lloyd
• Jacob Youmbi
• Jacob Young (American football)
• Jacob Young (disambiguation)
• Jacoby Symphony Hall
• Jacob Ziv
• Jacob Zuma dismissal of Nhlanhla Nene
• Jacob Zuma Foundation
• Jacob’s coat
• Jacob’s Ladder
• Jaco (character)
• Jaco Coetzee
• Jaco Coetzee (rugby union, born 1996)
• Jaco, David
• Jaco (Dragon Ball)
• Jaco (Dragonball)
• Jaco (fictional character)
• Jaco (footballer)
• Jaco Henn
• Jaco (Jaco the Galactic Patrolman)
• Jaco (JtGP)