Allan Cunningham (July 13, 1791 - June 27, 1839) was an English botanist and explorer.

He primarily traveled in New South Wales to collect plants. Among other explorations, he joined John Oxley's 1817 expedition to the Lachlan and Macquarie rivers and traveled as the ship's botanist aboard the HMS Mermaid from 1817 to 1820. He also undertook an expedition to what is now Canberra in 1824.

His grave is at the Botanic Gardens in Sydney.