Figures weighted to reflect purchasing power show that UK GPs earn on average £82,000 per year, compared to £96,000 in the US.
GPs in Germany earn £62,000 and in France £48,000, according to slides from a Treasury presentation leaked to the Financial Times last week.
GPC deputy chairman Dr Laurence Buckman said he did not think UK GPs were the second-best paid.
'Our gross pay may be high, but we have to pay staff out of that,' he said. But he added that UK GPs deserved to be well paid because of the range and quality of their work.
'We provide a wider range of services, we are higher qualified and have registered lists,' he said.
The leaked presentation warns of a slowdown in NHS spending and an efficiency drive.
Dr Buckman said: 'The spin from the government is that GPs are overpaid and that is why the NHS is bankrupt, but this is political pantomime.'