Hawker Britton is a lobbying and political consulting firm, headquartered in Australia. It is known to have influence with the Australian Labor Party. It has the largest number of clients on the Australian Government Federal Lobbyist Register, and has multiple offices spread across Australia and New Zealand. It is majority owned by WPP AUNZ, a marketing conglomerate headquartered in Australia, New Zealand, and South East Asia; itself a subsidiary of the WPP plc conglomerate.