Roger Sidney Goody (born 17 April 1944, in Northampton) is an English chemist who served as director at the Max Planck Institute for Molecular Physiology in Dortmund from 1993 until 2013.

In 1970 he became a scientific fellow at the Max Planck Institute for Experimental Medicine, Göttingen in the field of nucleotide research.

From 1972 till 1993 he was a group leader at the Max Planck Institute for Medical Research, Heidelberg in the field of enzymology and nucleotide research, with a focus on actin, myosin, adenylate kinase, EF-Tu, HRAS-p21, reverse transcriptase, nucleotides and nucleic acid sequencing.

[1][3] Since 2004 he has also held a full professorship in biochemistry (supramolecular systems) at the Ruhr University Bochum, with a dual emphasis on higher education and fundamental research.

He pioneered the use of nucleotide analogs, synthesized at the beginning of his career, in muscle research and later for Ras-family GTPases, leading to the first ever structure determination of an unstable protein-substrate complex (Ras:GTP).