Scaddan is a small town and locality in Western Australia located 783 kilometres (487 mi) east of Perth situated just off the Coolgardie-Esperance Highway between Norseman and Esperance in the Goldfields-Esperance region of Western Australia.

The Kendall Road, Speddingup East and Truslove Townsite Nature Reserves are located within Scaddan.

The name of the post office was changed from Thirty Mile to Scaddan in 1915 and by 1916 a school and hall had been built in the town.

[4][5] The town is named after John "Happy Jack" Scaddan, the premier of Western Australia from 1911 to 1916 and a prominent advocate of the Esperance railway.

Kendall Road and Truslove Townsite Nature Reserves are located within the Mallee bioregion, while the Speddingup East Nature Reserve is located in the Esperance Plains bioregion:[6]