Charles Archibald Brookes Hoadley CBE (Burwood, 1 March 1887 – Footscray, 27 February 1947) was an Australian geologist.

The son of Abel Hoadley and his wife Susannah Ann née Barrett (he was the tenth of their fourteen children).

Hoadley was a member of the Australasian Antarctic Expedition led by Sir Douglas Mawson from 1911 to 1914.

He was better known as founder and from 1924 until his death in 1947 Warden of Gilwell Park, Gembrook and a key part of Leader training, being one of the state's two first Deputy Camp Chiefs – authorised to award Scout Leaders with the Wood Badge.

Hoadley died from coronary thrombosis at home, in Footscray on 27 February 1947.