Little Wobby is a suburb of the Central Coast region of New South Wales, Australia, located on the north bank of the Hawkesbury River.

Little Wobby was originally occupied by the Commonwealth Military Forces during the Second World War.

Several buildings were erected along the shoreline to house artillery batteries in case of a Japanese invasion through Broken Bay and the Hawkesbury River.

In the 1970s a plan was mooted for the State government to purchase all of the properties along the shore and demolish the houses in order to rehabilitate the land and return it to being part of the national park.

[2] Most of the suburb's area is part of the Broken Bay Sport and Recreation Centre, a 4-square-kilometre (988-acre) bushland reserve at the mouth of the Hawkesbury River, which offers several walking trails including the Highway Ridge Trail which passes close to the residential area and extends north into the Brisbane Water National Park.