Economics is an introductory textbook by American economists Paul Samuelson and William Nordhaus.

It was the bestselling economics textbook for many decades and still remains popular, selling over 300,000 copies of each edition from 1961 through 1976.

[1] The book has been translated into forty-one languages and in total has sold over four million copies.

This paralleled the then-extant Cold War economies of Soviet communism and American capitalism.

Like Tarshis's work, Economics was attacked by American conservatives (as part of the Second Red Scare, or McCarthyism), universities that adopted it were subject to "conservative business pressuring", and Samuelson was accused of Communism.