Brian John Marples FRSNZ (31 March 1907 – 1997) was a British zoologist who spent most of his career in New Zealand.
From 1930 to 1936 Marples worked as Assistant Lecturer in Zoology at Manchester. In 1937 he went to New Zealand to become Professor of Zoology at the University of Otago, a position he served in for 30 years before retiring in 1967 to Woodstock, near Oxford in southern England. He published numerous papers on a wide variety of zoological topics, especially in the fields of ornithology, arachnology and fossil penguins. He was also a cofounder of the Ornithological Society of New Zealand.
- 1953 – Fellow, Royal Society of New Zealand
- 1980 – Honorary Member, Ornithological Society of New Zealand