Hiiragi (written: 柊) is a Japanese surname. Notable people with the surname include:

• Aoi Hiiragi (柊 あおい) (born 1962), Japanese manga artist
• Rumi Hiiragi (柊 瑠美) (born 1987), Japanese actress

Fictional characters

• Kagami (pigtails) and Tsukasa Hiiragi (short hair), major characters in the manga series Lucky Star
  • Miki Hiiragi, their mother
  • Tadao Hiiragi, their father
  • Inori Hiiragi, their oldest sister
  • Matsuri Hiiragi, their older sister
• Tenri Hiiragi (柊 天理)
• Chisato Hiiragi, an NPC in Genshin Impact
• Alice Hiiragi, a character from Persona 5 Strikers
• Asuka Hiiragi, the main female protagonist in the role-playing game Tokyo Xanadu
• The Hiiragi family from the novel series, Seraph of the End:
  • Kureto Hiiragi (柊 暮人)
  • Seishirou Hiiragi (柊 征志郎)
  • Mahiru Hiiragi (柊 真昼)
  • Shinya Hiiragi (柊 深夜)
  • Shinoa Hiiragi (柊 シノア)
• Kappei Hiiragi from the visual novel Clannad
• Akira Hiragi, a character from Valkyrie Drive
• Yuzu Hiiragi, a character from the manga/anime series Yu-Gi-Oh! Arc-V, known as Zuzu Boyle in the dub.