Loacker is a surname most common in Vorarlberg, Austria, and South Tyrol, Italy. Notable people with the surname include:
Georgine Loacker (1926–2013), American assessment scholar Guido Loacker (born 1945), Austrian Olympic sports shooter Jürgen Loacker (born 1974), Austrian Olympic bobsledder
See also Loacker, a South Tyrolean confectionery company SSV Bozen Loacker, a South Tyrolean men's handball club