HBA

• Hawaii Baptist Academy
• Healthcare Businesswomen's Association
• Hewa Bora Airways
• Hirsch Bedner Associates
• Hospital Broadcasting Association
• Home Builders Association, a local association federated in National Association of Home Builders

• Hemoglobin A (HbA)
• Host bus adapter, computer network hardware
• Horse blood agar, an agar plate
• Human Biology Association

• Hamba language (ISO 639-3 code hba)
• Highway Beautification Act
• Hobart Airport (IATA code), Tasmania, Australia
• Honours degrees in Canada: Honors Bachelor of Arts, or Honors Business Administration
• Hood By Air, fashion brand
• "HBA" (song)

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