British arachnologist. He is often confused with his nephew, Frederick Octavius Pickard-Cambridge (1860-1905), who was also a British arachnologist.
- Pickard-Cambridge O. 1863. Description of twenty-four new species of spiders lately discoverd in orsetshire and Hampshire; together with a list of rare and some other hitherto unrecorded British spiders. Zoologist, 21: 8561-8599.
- Pickard-Cambridge O. 1869a. Descriptions and sketches of some new species of Araneida, with characters of a new genus. Ann. Mag. Nat. Hist., (4)3: 52-74, pl. IV-VI.
- Pickard-Cambridge O. 1869b. Notes on some spiders and scorpions from St Helena, with descriptions of new species. Proc. zool. Soc. Lond. 1869: 531-544.
- Pickard-Cambridge O. 1871a. Descriptions of some British spiders new to science, with a notice of others, of which some are now for the first time recorded as British species. Trans. Linn. Soc. London, 27: 393-464, pl. LIV-LVII.
- Pickard-Cambridge O. 1871b. Notes on some Arachnida collected by Cuthbert Collingwood, Esq., M. D. during rambles in the China Sea, etc. Proc. Zool. Lond., 1871: 617-622, pl. XLIX.