Daniel Owen Morgan FRSE (19 August 1893 – 17 November 1959) was a 20th-century British zoologist.
In 1919 he began studying zoology at the University College of Wales graduating BSc in 1923.
He then joined the staff of Robert Thomson Leiper at the Institute of Agricultural Parasitology in London.
His proposers were James Hartley Ashworth, Charles Henry O'Donoghue, Alfred E. H. Cameron, and Arthur Craig Bennett.
[2] In 1952 he left Edinburgh to take a post lecturing in Animal Pathology and Parasitology at Cambridge Veterinary School.