The study ranked 113 nationalities.
British men were ranked 78th with an average length of 13.9 cm, and Americans were behind the Brits (and the Canadians, Spaniards, French, Australians and Russians,) at 12.9 cm.
By continent, African men were found to have the largest penises, while north-east Asians are the smallest.
Among European countries, the men of Iceland were deemed the biggest.
North Korean men fell short, with the average being 9.6 cm.
The research was carried out by Dr Richard Lynn, Emeritus Professor of Psychology at Ulster University.
Though the study may have peaked people’s interest, it’s raised many eyebrows too with critics claiming that the study is flawed, as he used some data from websites.
Although the recent survey plays directly into ethnic stereotypes, sexuality researchers Masters and Johnson explained that penis size really has no effect on female satisfaction, according to The Inquisitor.
The Telegraph reported that Professor of methodology at Holland’s Tilburg University Jelte Wicherts said: “This is a brave paper in a controversial area but the data has no methodology.”
Medical Daily says penis size seems to be a bit of a preoccupation for men, causing a healthy industry that claims to have various methods of enlarging the male organ. There is a significant number of men who claim to have small penises but are in fact quite normally endowed, the report says.
It says penile enhancements can come with a host of complications and side effects.
Here are a few of the average penis sizes by country in centimetres:
Republic of Congo, 18
South Africa 15.2
New Zealand 13.9
South Korea 9.6
North Korea 9.6
This article has been adopted from Times Live for Red Pepper Online. Follow us on Twitter @redpepperug