HC1, HC-1 or HC.1 may refer to:
Helicopter HC-1 (Helicopter Combat Support Squadron 1), a former helicopter squadron of the US Navy Boeing-Vertol HC-1, a large American tandem rotor helicopter Boeing Chinook HC.1, operated by the Royal Air Force Aérospatiale-Westland Puma HC.1, a four-bladed medium transport/utility helicopter
Technology Sony HDR-HC1, a camcorder HC1, a wearable headset computer in the Golden-i platform
Other HC1, a form used in the UK to claim eligibility for support under the NHS Low Income Scheme
See also HC-One, a British healthcare management company