HGSS may refer to:
- Holmer Green Senior School, a secondary school in Buckinghamshire, England
- Hougang Secondary School, a secondary school in Hougang, Singapore
- HG/SS, shorthand for Pokémon HeartGold and SoulSilver game versions
- Homantin Government Secondary School, a secondary school in Hong Kong
This disambiguation page lists articles associated with the title HGSS.
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