DBA or dba may refer to:

• Doctor of Business Administration, a research-based doctorate degree

• DarkBASIC (.dba format), a computer language and associated programming environment designed to simplify the creation of 3-D video games
• Database administration, a technical function / profession concerned with the effective use and control of a particular database and of its related applications
  • Database administrator, a person responsible for the environmental aspects of a database
• Dynamic bandwidth allocation, a telecommunications algorithm

• Decibel A-weighting (dBA), a sound level unit

• Doing business as, a legal term related to the name a business uses