Hyperventilating and variants may refer to:

• Hyperventilation, the act of hyperventilating
• Hyperventilation syndrome, a medical condition involving hyperventilating
• Cheyne–Stokes respiration, the breathing disorder
• Hypocapnia, a physiological result of hyperventilating
• "Hyperventilating" (song), a 2006 song by Tami Chynn

• Emil Karl Blessing, Sr.
• Emil Karl Gustav Alfred Mattiesen
• Emil Karl Gustav Mattiesen
• Emil Karl Mattiesen
• Emil Kenzhesariev
• Emil Keres
• Emil Keup
• Emil Kiszka
• Emil Knauer
• Emil Konradsen Ceide
• Emil Kosa, Jr.
• Emilkowalski family
• Emil Krastev
• Emil Kräpelin
• Emil Krückmann
• Emil Kumor
• Emil Källström
• Emil Ladenburg
• Emil Landman
• Emil Larmi
• Emil Lerp
• Emil Leyde
• Emil Lie
• Emillio Polli
• Emillo Charles Jr.