Heather Vivian Simpson is a New Zealand animal physiologist, and is professor emerita at Massey University, specialising in the biology of gastrointestinal parasites of sheep.
Her dissertation was titled Water and electrolyte transfers in ruminants, and was finished in 1969, and supervised by Donald Titchen, Maurice Lancaster and Campbell Reid.
[3] Simpson's research focused on agriculturally important gastrointestinal parasites of sheep, such as Teladorsagia spp.
[3] When Simpson retired in 2015, she was the longest-serving academic at Massey, having at that point spent fifty years at the university, forty-five of them on staff.
[3] Simpson retained an honorary position at AgResearch, and continued to supervise her remaining doctoral students after her retirement.