Hallier is a surname. Notable people with the surname include:

• Ernst Hallier (1831–1904), German botanist and mycologist
• Jean-Edern Hallier (1936–1997), French writer, critic and editor
• Johannes Gottfried Hallier (1868–1932), German botanist
• Lori Hallier (born 1959), Canadian film, stage and television actress

• Château du Hallier, is a castle in the commune of Nibelle in the Loiret département of France

This page lists people with the surname Hallier.
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