Arnold Edmund Piesse (2 April 1872 – 21 July 1935) was an Australian politician who served as a member of the Legislative Assembly of Western Australia from 1909 to 1914 and again from 1930 until his death, on both occasions representing the seat of Katanning.

After leaving school, Piesse worked in Northam for five years, employed by the merchant firm of George Throssell (a future premier).

He then joined two of his brothers (Charles and Frederick) in business at Katanning, eventually taking over the company.

[1] He first entered parliament in November 1909, winning the seat of Katanning unopposed at the by-election caused by the resignation of his brother Frederick.

He had left for a health trip to England in February of that year, and on the Cape Town–Fremantle leg of the return journey killed himself by jumping overboard.