John McGrath is an Australian entrepreneur in the real estate industry. McGrath was an investor on season 1 of Shark Tank in 2015. He was replaced by Glen Richards for season 2 after leaving the show to pursue his own business ventures.
McGrath is the founder of McGrath Estate Agents, a real estate franchise in Australia. The company was list on the ASX beginning in 2015, with McGrath retaining 27% share of the company. It has been considered one of Australia's largest real estate network.