Alfred Napoleon Piesse (17 July 1866 – 15 June 1939) was an Australian politician who served as a member of the Legislative Assembly of Western Australia from 1911 to 1924, representing the seat of Toodyay.

He joined the Country Party upon its formation in 1914, and served as state deputy leader from 1915 to 1921, initially under Francis Willmott and then under Tom Harrison.

After leaving school, Piesse initially worked as a post office messenger, and then joined the Telegraph Department.

Piesse left the Telegraph Department and moved to Toodyay in 1894, working variously as a court clerk, magistrate, and tax collector.

[1] Piesse entered parliament at the 1911 state election, defeating the sitting Speaker of the Legislative Assembly, Timothy Quinlan, in the seat of Toodyay.