Adventure Consultants, formerly Hall and Ball Adventure Consultants, is a New Zealand-based adventure company that brings trekking and climbing groups to various locations. Founded by Rob Hall and Gary Ball in 1991, it is known for its pioneering role in the commercialisation of Mount Everest and the 1996 Mount Everest climb during which eight people died, including Hall, a guide, and two Adventure Consultant clients.

Robert Edwin Hall was a New Zealand mountaineer. He was the head guide of a 1996 Mount Everest expedition during which he, a fellow guide, and two clients died. A best-selling account of the expedition was given in Jon Krakauer's book Into Thin Air, and the expedition has been dramatised in the 2015 film Everest. At the time of his death, Hall had just completed his fifth ascent to the summit of Everest, more at that time than any other non-Sherpa mountaineer.