Cesar Ricardo Bressani Castignoli (28 September 1926 – 30 January 2015) was a Guatemalan food scientist. Born in Guatemala City, he received a bachelor of science in chemical engineering degree from the University of Dayton in 1948. In 1951, he received a master's degree from Iowa State University. In the same year, Bressani returned to Guatemala where he worked at the Institute of Nutrition of Central America and Panama, INCAP. In 1952, he received a scholarship from the Rockefeller Foundation to study biochemistry at Purdue University, where Bressani obtained his Ph.D. in 1956. Afterwards, he reincorporated to the INCAP, this time as the Head of the Division of Agricultural Sciences and Food until 1993.