Asa may refer to:

In people:

  • Asa (given name), a given name (including a list of persons with the name)
  • Asa, god of the Kamba people ethnic group in Kenya

In geography:

  • Asa, Iran, in South Khorasan Province
  • Asa, Nigeria, in Kwara State
  • Asa River (disambiguation), multiple rivers with the name
  • American Samoa, or IOC country code ASA, an unincorporated territory of the United States


  • Aspirin, or simply ASA, a drug used to treat aches, fever and inflammation
  • Asa Shigure, character in the Shuffle! media franchise
  • Asa (raga), Indian format of musical rules
  • Ása, genitive of Æsir, the predominant group among the Norse gods
  • Asa Station, Japanese railway station in San'yō-Onoda, Yamaguchi
  • Asa, or naboot, a staff used in Egyptian stick fencing
  • ASA physical status classification system, a system for assessing the fitness of patients before surgery
  • ASA, a film speed rating system defined by the former American Standards Association