SBD may refer to:
- San Bernardino, California
- San Bernardino County, California
- San Bernardino Freeway (disambiguation), from US 101 to I-215
- San Bernardino International Airport
- Schottky barrier diode
- "Silent but deadly," a common slang term for quiet flatulence
- Smart Battery Data, a method for monitoring a rechargeable battery pack
- Scout Bomber Douglas, in the standard U.S. naval aircraft naming system prior to 1962 also known as the Douglas SBD Dauntless
- The reporting mark for Seaboard System Railroad
- SBD, the ISO 4217 currency code for the Solomon Islands dollar
- Secure by design, a term used in software engineering that means that the program in question has been designed from the ground up to be secure
- Super Battle Droid, from the Star Wars fictional universe
- Soundboard (disambiguation), multiple meanings
- Short Burst Data, a communication protocol for the Iridium-Modem