John Bates Clark (January 26 1847-March 21 1938) was an American neo-classical economist. He was one of the pioneers of the marginalist revolution and opponent to the Institutionalist school of economics .

The John Bates Clark Medal, one of the most prestigious awards in the field of economics, is named after him.

Major works by John Bates Clark:

• The Philosophy of Wealth (1886)
• The Distribution of Wealth (1899, 1902)
• Essentials of Economic Theory (1907)
• Social Justice without Socialism (1914).