Lilliehöök () is a Swedish surname, chiefly borne by a Swedish noble family. Notable people with the surname include:
Anna Lilliehöök (born 1947), Swedish politician Clara Sabina Lilliehöök (1686–1758), Swedish industrialist Ebba Lilliehöök (1529–1609), Swedish noblewoman, landlord and county administrator Gösta Lilliehöök (1871–1952), Swedish Army officer Gösta Lilliehöök (1884–1974), Swedish Army officer and modern pentathlete Johan Lilliehöök (1598–1642), Swedish general and nobleman.
See also Lilliehöökbreen, a glacier complex in Svalbard, Norway Lilliehöökfjorden, a fjord branch in Svalbard, Norway