Dr. John Tickell (born 29 January 1945) is an Australian doctor, businessman, author, former athlete and speaker.
He has written several books, the most notable being The Great Australian Diet and Laughter, Sex, Vegetables & Fish.
He has also appeared on television shows such as Celebrity Overhaul providing advice on healthier lifestyle.
Among his business achievements including the collaboration with Jack Nicklaus in creating the Heritage Golf and Residential Country Club in Victoria.
He has also appeared as a public speaker on issues such as how to turn stress into success and how to live a longer, healthier life.