Henry Roughton Hogg (9 February 1846 – 30 November 1923) was a British amateur arachnologist and businessman who lived in both Australia and Britain.

Hogg emigrated to Australia in December 1873 and co-founded a mercantile and shipping agency in Melbourne, becoming a prominent member of the business community.

He joined the Field Naturalists' Club and the Royal Society of Victoria and acquired a specialist knowledge of the spiders of Australia and New Zealand.

He continued to study spiders and contributed regular articles to the Proceedings of the Zoological Society of London and other publications and scientific journals, often providing the first descriptions of new species.

[2][3] After graduating he commenced his commercial career in the family firm of Hogg and Robinson, merchant insurance agents.

[7] Henry R. Hogg returned to Australia on a more permanent basis in mid-December 1873, arriving at Melbourne from Bombay aboard the passenger steamer R.M.S.S.

[5] He was one of the commissioners representing Victoria at the Adelaide Jubilee Exhibition in South Australia, which ran for six months commencing in June 1887.

[25] One of the exhibits at the February 1889 meeting of the Field Naturalists' Club were "specimens of poisonous spider from Riverina", presented by H. R.

Champion was a prominent British socialist on a visit to Australia; he had an upper middle-class background but was actively involved in labour movement politics.

Adelaide Hogg and Henry Champion engaged in a secret love affair that lasted for a number of years.

[11] In early April 1891 Adelaide Hogg and her adopted child left Melbourne to travel to London aboard the R.M.S.

During her stay she rekindled her relationship with Henry Champion (who had returned to England a month before Adelaide left Melbourne).

[31] Champion was employed as a leader writer for The Age newspaper and resided at Beaconsfield, south-east of Melbourne, where Adelaide may have stayed for a time.

[32] To what extent, the affair continued after August 1894 is a matter of conjecture, but Champion's private letters reveal only occasional and sometimes fractious meetings.

[33][C] In August 1895 Henry Hogg read a short paper at the meeting of the Royal Society of Victoria on 'Certain Spiders from Central Australia'.

The spiders had been obtained by the Horn scientific expedition to central Australia and Hogg had been given the opportunity to examine and classify them.

[5][2][42] Eleven papers written by Hogg on spiders from various parts of the world were published in the Proceedings of the Zoological Society of London between 1901 and 1922.

In February 1907 he was a director of the Durham Collieries Electric Power Company Ltd.[44] Hogg and his wife visited Australia in 1909.

[46] Henry Roughton Hogg died on 30 November 1923, aged 77, at the Empire Nursing Home at Vincent Square, Westminster, London.