Hilliard's Bay Provincial Park is a provincial park in Alberta, Canada. It is located from High Prairie, on the north-western shore of Lesser Slave Lake in northern Alberta.
The park is situated at an elevation of and has a surface of . It was established on October 24, 1978, and is maintained by Alberta Tourism, Parks and Recreation.
The park has an overnight camping ground at Hilliard's Bay, which includes a boat launch site and playgrounds, and three day use areas, all powered.
The following activities are available in the park: