Thomas Plunkett Hayes AO is a retired senior Australian public servant, best known for his time at the Australian Customs Service.

Hayes was appointed to the position of Secretary of the Department of Business and Consumer Affairs starting in March 1982.

[4] When the Australian Customs Service was established in 1985, splitting out from the Department of Industry, Technology and Commerce, Hayes was appointed its Comptroller-General.

[5] At the time, Hayes said the Customs service required the full-time attention of its top executive.

[7] Hayes was made an Officer of the Order of Australia in June 1992 for service to international organisations, and for his public service.