Although other sports are practised at the club, Mariano Moreno is mostly known for its rugby union team, which currently plays in Primera División A, the second division of the Unión de Rugby de Buenos Aires league system.

Apart from rugby, other sports practised at the club are field hockey, gymnastics, and tennis.

[1] The club's name was chosen as a tribute to lawyer and journalist Mariano Moreno, who played a decisive role in the Primera Junta, the first Government of Argentina.

Mariano Moreno has a strong rivalry with Los Matreros, the other team from the Zona Oeste of the Greater Buenos Aires.

T The team lasted there only one season so in 2011 Mariano Moreno was relegated to second division after finishing 15 in Zona Reubicación.