Louis Wright Roberts (September 1, 1913 – November 3, 1995) was an American microwave physicist. In the 1960s, he was the chief of the Microwave Laboratory at NASA's Electronics Research Center. In the 1970s and 1980s he worked at the United States Department of Transportation's John A. Volpe National Transportation Systems Center, beginning in senior research positions and ultimately becoming the director of the center. His research focused on optics and microwave engineering.