Robert Brooks Cullum (May 10, 1912 – December 11, 1981) was an American businessman and civic leader.
He attended North Dallas High School (where he played on the football team), transferred to Kemper Military School, and then to Southern Methodist University; he earned a bachelor's degree in journalism from SMU.
Cullum, along with brother Charles, took over the family's business, which gained control of Toro Food Stores.
Cullum served on the board of directors of the State Fair of Texas, as president of the same from 1967 to 1969, served as president of the Dallas Chamber of Commerce from 1964 to 1965, and also served on the board of directors for Dallas Power and Light, the Dr Pepper Company, and the Republic National Bank of Dallas.
In 1962, Cullum received the Linz Award for civic service to the city of Dallas, the Brotherhood Citation of the National Conference of Christians and Jews, and, in 1964, he was named the Dallas Press Club's Headliner of the Year.