HBA

HBA or hba may refer to:

Organizations

 * 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

Science and technology

 * Hemoglobin A (HbA)
 * Host bus adapter, computer network hardware
 * Horse blood agar, an agar plate

Other uses

 * Hamba language (ISO 639-3 code )
 * 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