Cardwell Bush Telegraph is a heritage-listed former post office and now heritage centre at 53 Victoria Street, Cardwell, Cassowary Coast Region, Queensland, Australia. The Telegraph and Post Office at Cardwell was designed by Colonial Architect's Office and built in 1870 by George McCallum, making it one of the oldest buildings in North Queensland. It is located on the corner of the Bruce Highway and Balliol Street at the southern end of the town and is immediately adjacent to the also heritage-listed Cardwell Divisional Board Hall.