O'Reilly's Guesthouse, Mountain guesthouse in Lamington National Park, Australia

O'Reilly's Guesthouse is a mountain lodging facility in Lamington National Park at about 930 meters elevation, surrounded by subtropical rainforest. The property includes multiple buildings and facilities spread across the grounds that provide accommodation, dining, and spaces for activities and nature observation.

Eight O'Reilly brothers began farming in the McPherson Range in 1912, and Lamington National Park was established around their land in 1915. The brothers founded the guesthouse in 1926, reached at first only by the Stockyard Creek Track they cut themselves from Canungra. In 1937 Bernard O'Reilly found the wreck of the Stinson airliner on the McPherson Range and led the rescue of its survivors.

The O'Reilly family cut the Stockyard Creek Track from Canungra themselves and hosted guests from Easter 1926. Bird feeding is encouraged, with seed sold to visitors, and regent bowerbirds, Australian king parrots and crimson rosellas have become accustomed to close contact with people. A memorial to Bernard O'Reilly stands in the grounds around the guesthouse.

Access is via Canungra; the gravel road to the door was only completed in early 1947, before which guests came by train to Beaudesert and then on horseback with packhorses. The Tree Top Walk, a 180-metre suspension bridge 20 metres above the forest floor, opened in 1987. Seed for bird feeding is sold to visitors, and the Stinson wreck lies about 8.4 kilometres away on a steep, dense route for experienced bushwalkers.

The Tree Top Walk opened in 1987 as the first canopy walkway of its kind in Australia, a 180-metre suspension bridge 20 metres above the rainforest floor. It gives views over the canopy and across the McPherson Range. The 1937 Stinson crash site lies about 8.4 km away and is reached on foot by experienced bushwalkers.