Paul Greenberg (born July 4, 1967) is an American fisherman and author who focuses on environmental, seafood and technology issues.

[1] His book, Four Fish: The Future of the Last Wild Food, was published in 2010 by Penguin Press on July 15, and entered the New York Times Best Selling Hard Cover List as of August 13.

In 2018 Penguin Press published the third in his "marine trilogy" The Omega Principle: Seafood and the Quest for a Longer Life and a Healthier Planet[8] an in-depth look[9] at omega-3 fatty acids and the unique role they play in human health and environmental balance.

In 2020 and 2021 Greenberg published Goodbye Phone, Hello World[10] (Chronicle Books) and The Climate Diet [11] (Penguin Press).

The Climate Diet focuses on 50 ways people can reduce their carbon footprint.