The Land Administration Building, known historically as the Executive Building or the Old Executive Building, is a heritage-listed former government building at 142 George Street, Brisbane, Australia. It was designed by Thomas Pye and built between 1899 and 1905 by Arthur Midson for the Government of the self-governing Colony of Queensland, which had become a state by the time of its completion. The Old Executive Building was added to the Queensland Heritage Register on 21 October 1992.
The building was originally occupied by the offices of the Lands and Survey Departments, the Premier of Queensland, the Executive Council, and the Queensland National Art Gallery. It contains a heritage-listed World War I Honour board.