Athletics are not the focus of campus life but do provide a rare sense of school spirit. RISD sports have fluctuated over the years with the RISD archives containing photos of football, baseball, and basketball teams spanning the very early 20th century. Yearbooks and alumni reveal the RISD Student Association funded basketball teams throughout the 1950s and 1960s that were called the 'Nads'. An ice hockey team formed soon after using the same name, 'Nads'. The ice hockey team played through the 1970s, 1980s, and 1990s with little record of other athletics. In 2000, a new basketball team was formed under the name 'Balls' to complement the ice hockey team, each with its own slogan: "When the heat is on, the Balls stick together", and "Go Nads" (deliberately sounding like "gonads"). Currently, these are the two most active and organized sports teams at RISD, with basketball the only sport played at varsity-level competition. Together, both teams provide a rally ground for students, faculty, administration, and staff alike. Intramural level teams round out the offering in rock climbing, men's and women's soccer, volleyball, frisbee, skiing and snowboarding.
In 2001, the Nads created the infamous, and unofficial mascot, "Scrotie," a man-sized penis wearing a red cape. RISD students claim Cooper Union and Pratt Institute as their archrivals in sporting events, and the two hold an annual basketball match in both Providence and New York.