James John Walker (entomologist)

James John Walker (16 May 1851, Sheerness – 12 January 1939) was an English entomologist.

Walker was a marine engineer who trained at the Royal Navy dockyard in Sheerness and voyaged around most of the world, collecting insects when on land.

His sister Adelaide married George Charles Champion (another entomologist) cementing their friendship.

After his retirement, Walker lived in Oxford and became one of the editors of the Entomologist's Monthly Magazine.

Walker's collections from the Pacific, Australia, New Zealand and the Mediterranean are shared by the Natural History Museum, London and the Oxford University Museum which also conserves his British Coleoptera.