Nilson Nelson Gymnasium, Sports venue in Brasília, Brazil

Nilson Nelson Gymnasium is a sports venue in Brasília, Brazil. It sits in the Ayrton Senna Sports Complex, next to the Mané Garrincha Stadium, and its roof structure was designed by engineer Hans Eger, who also worked on Anhembi in São Paulo.

The gym opened in 1973 and was first named after President Médici. It was renamed in 1987 to honor journalist Nilson Nelson, and a roof collapse in 1991 led to reconstruction.

The building's design was inspired by a basketball hoop, a detail that ties the arena to the sport played there. On game nights, the stands fill with fans who come to support the local basketball team.

The arena is easy to reach on foot from the Monumental Axis and the nearby stadium. For big events, arrive early because the exits are organized to handle crowds safely.

The arena once held over 24,000 people for a basketball game, the largest crowd for such a match in Brazil. The building also has 84 surveillance cameras spread inside and outside.