Edward Augustus Petherick, CMG, (6 March 1847 – 17 September 1917) was a prominent Australian bookseller, book collector, bibliographer, publisher and archivist, whose collection became the basis of the Australiana section of the then Commonwealth National Library (now National Library of Australia).

In addition to his work for Robertson, Petherick was privately engaged in compiling a bibliography of Australian and Pacific material.

By 1886 Petherick was living in Brixton Hill and working on the catalogue of the York Gate Library, which was published that year as Catalogue of the York Gate Library formed by Mr S. William Silver: An Index to the Literature of Geography, Maritime and Inland Discovery, Commerce and Colonisation.

The Australian historian George William Rusden was a frequent visitor to Petherick and his library at Petherick's home "Yarra Yarra" on Brixton Hill, even staying for weeks when Rusden was working on his book History of Australia.

It comprises "some 10,000 volumes and 6,500 pamphlets, maps, manuscripts and pictures relating to Australia and the Pacific area".