Marcos Nogueira Eberlin (born 4 March 1959[1]) is a Brazilian chemist and former professor at the Institute of Chemistry of the University of Campinas.

[1] Eberlin discovered the Eberlin Reaction during his work on gas phase ion chemistry, and he and his research group introduced EASI[2] (Easy Ambient Sonic-spray Ionization), an ionization technique used in mass spectrometry.

Eberlin is an advocate of intelligent design in Brazil,[3][4] on which he also lectures and he has signed the Dissent From Darwinism statement.

[7] His daughter, Livia S. Eberlin,[8] is also a chemist who won the MacArthur "Genius" Fellowship in 2018 for her research on the use of mass spectrometry to diagnose cancer.

[9] Eberlin and his daughter have worked together on a different project, using mass spectrometry to detect counterfeit money.