Peter Barrington BestFRSSAf (1939 - 22 April 2015) was an English marine biologist known for his research on whales and dolphins of Southern Africa.
Best was born London in 1939, and earned a BA Honours degree from Cambridge University in 1962. He then worked as a whale researcher with the Fisheries Development Corporation of South Africa in Cape Town, collecting data for which he earned a PhD from Cambridge in 1971. From 1969 to 1984 He worked at the Sea Fisheries Research Institute in Cape Town, then joined the Mammal Research Institute of the University of Pretoria, working first as an Antarctic/Senior Research Officer between 1985 and 2004 and Professor from 2004 onward. He was elected a Fellow of the Royal Society of South Africa in 2004.