The Royal Adelaide Show is an annual carnival and agricultural show held at the Adelaide Showground in Wayville, a suburb of Adelaide, South Australia. It is run by the Royal Agricultural and Horticultural Society of South Australia and is one of the state's biggest events, attracting up to half a million visitors each year.

The show features a wide range of competitive entries across categories such as livestock, pets, food and beverages, junior competitions, individual talents, and entertainment. It also offers a large carnival with over 50 rides including the famous Skymaster Wheel. Showbags are a popular attraction, with over 350 different bags available for purchase.

In 2025, the Royal Adelaide Show is celebrating 100 years at the Adelaide Showgrounds, running from August 30 to September 7. Special events include the Southern Lights Spectacular, a nightly show with drones, pyrotechnics, lasers, and special effects, alongside family-friendly entertainment and shows for children featuring popular characters like Bluey and Peppa Pig.

The showground location at Wayville has been hosting the event since 1925, and the event has grown over the years to include permanent venues, a diverse range of exhibitions, competitions, and entertainment options, making it a landmark event in South Australia's cultural calendar.