Dan Graur \ˈɡra.ur\ (born July 24, 1953, in Piatra Neamț) is a Romanian-American scientist working in the field of molecular evolution.

He is coauthor along with Wen-Hsiung Li of Fundamentals of Molecular Evolution.

In 1985 Graur received his Ph.D. at the University of Texas Health Science Center at Houston for research supervised by Masatoshi Nei.

He retired in 2006 as Norman and Rose Lederer Professor Emeritus of Zoology.

From 2009 to 2011 he has held the position of Councillor for the Society for Molecular Biology and Evolution.