Arthur Herbert Tennyson Somers-Cocks, 6th Baron Somers, KCMG, DSO, MC (20 March 1887 – 14 July 1944), was a British Army officer who was the 16th Governor of Victoria, from 1926 to 1931 and Administrator of Australia in 1930–31.

Somers was born in Freshwater, Isle of Wight, the eldest son of Herbert Haldane Somers-Cocks and the former Blanche Clogstoun.

He was twice wounded, mentioned in despatches, awarded the Military Cross, the Distinguished Service Order, and appointed to the French Legion of Honour.

He "had charm and natural gaiety which won him popularity ... warm and generous, he had a genuine interest in people, as well as a high sense of duty and leadership ... a shrewd and successful governor".

Somers was determined to make the role more than a ceremonial one and enthusiastically participated in Scout camps and hikes, insisting on pitching his own tent.

[1][11] During his tenure as Deputy, Somers led the British contingent to the 5th World Scout Jamboree at Vogelenzang in the Netherlands.

[12] He also proposed the construction of an international Scout hostel in London as a memorial to the founder, which eventually resulted in the opening of Baden-Powell House in Kensington.