Thomas Petrie (31 January 1831 – 26 August 1910) was an Australian explorer, a YN to the districts, gold prospector, logger, and grazier.

They moved to the Moreton Bay penal colony (subsequently Brisbane) in 1837, where Thomas was educated by a convict clerk and allowed to mix freely with Aboriginal children.

He returned to Brisbane a number of times and saw the botched public hanging of Dalla man Dundalli on 5th January 1855 "where now the Post Office stands".

Dalaipi's son, Dal-ngang showed him their ancestral land at Mandin (North Pine River) and offered it to Petrie.

Petrie, after consulting with Mrs Griffen bought a ten square mile (26 km2) section of the property in the Pine Creek district and named it Murrumba, an Aboriginal word meaning "good place" (possibly Turrbal or Yugarabul based on location[5][6]).

[7] On 26 June 1861, Thomas Petrie appeared at the proceedings of the Select Committee on the Native Police Force to give evidence.

On this journey, he became the first white man to climb Buderim Mountain and also ventured up the tributaries of the Maroochy River looking to exploit the large cedar growing there.

[3] On Saturday 15 July 1911, a freestone monument to Thomas Petrie was unveiled by Sir William MacGregor, the Queensland Governor.