Steve Irwin, Australian zoologist and television host (d. 2006)

Stephen Robert Irwin (22 February 1962 – 4 September 2006), affectionately known worldwide as "The Crocodile Hunter", was a passionate Australian zookeeper, conservationist, television personality, wildlife expert, and environmentalist whose exuberance for the natural world was truly infectious.

Irwin's fascination with wildlife began early, growing up immersed in a world of crocodiles and other reptiles, an education passionately instilled in him by his father, Bob. His infectious enthusiasm and fearless approach to wildlife became globally recognized through the television series The Crocodile Hunter (1996–2007). This internationally broadcast wildlife documentary series, which he co-hosted with his wife Terri, brought the wonders of the animal kingdom into millions of homes, making conservation engaging and accessible. Their on-screen chemistry and shared dedication to wildlife were evident as they guided viewers through daring encounters and educational segments.

Beyond their flagship show, the adventurous couple also hosted other popular series, including Croc Files (1999–2001), The Crocodile Hunter Diaries (2002–2006), and New Breed Vets (2005), further solidifying their status as leading voices in wildlife education. Together, they also co-owned and operated the renowned Australia Zoo, a legacy founded by Irwin's parents in Beerwah, approximately 80 kilometres (50 mi) north of Brisbane, the capital of Queensland. The Irwins were also loving parents to two children, Bindi and Robert, who have since continued their father's extraordinary conservation work.

Tragically, in 2006, while filming a documentary in Australia's breathtaking Great Barrier Reef, Steve Irwin died after being pierced in the chest by a short-tail stingray. His sudden passing sent shockwaves across the globe, becoming international news and prompting an outpouring of grief and tributes from fans, media outlets, governments, and non-profit organizations alike. His profound impact on conservation and public awareness of wildlife continues to be honored in numerous ways: parks, zoos, and streets bear his name, as does the vessel MY Steve Irwin. Even species and celestial bodies pay homage, including the snail species Crikey steveirwini and the asteroid 57567 Crikey. His enduring legacy is proudly carried forward by his wife, Terri, and their two children, Bindi and Robert, who remain dedicated to the operation of Australia Zoo and the global mission of wildlife conservation that Steve Irwin championed with unparalleled passion.