Roscoe Gardner Bartlett, Ph.D. (born June 3, 1926) is the U.S. Representative for Maryland's 6th congressional district, serving since 1993. He is a member of the Republican Party, and a member of the Tea Party Caucus. He is the second oldest Republican member of the House.
Bartlett was born in Moreland, Kentucky, to Martha Minnick and Roscoe Gardner Bartlett. He completed his early education in a one-room schoolhouse. He attended Columbia Union College (now Washington Adventist University), a college affiliated with the Seventh-day Adventist Church, and graduated in 1947 with a B.S. in theology and biology and a minor in chemistry. He had intended to be a Seventh-Day Adventist minister, but he was considered too young for the ministry after receiving his bachelor's degree at the age of 21.
Afterwards, Bartlett was encouraged to attend graduate school at the University of Maryland, College Park. He studied anatomy, physiology, and zoology, earning a Master's degree in physiology in 1948. Bartlett was then hired as a faculty member at Maryland and taught anatomy, physiology and zoology while working towards his Ph.D. in physiology, which he earned in 1952. His academic career included lecturing at Loma Linda School of Medicine, also affiliated with the Seventh-day Adventist Church, in Loma Linda, California (1952–1954), and serving as an assistant professor at Howard University Medical School in Washington, D.C. (1954–1956).