HGA can stand for:
- Hammel, Green and Abrahamson, an architecture firm
- Handweavers Guild of America
- Holy Guardian Angel, a religious term
- High-gain antenna, for radio
- Human granulocytic anaplasmosis, a disease
- Hargeisa Airport
- Human Genetics Alert, originally Campaign Against Human Genetic Engineering
This disambiguation page lists articles associated with the title HGA.
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