Esporte Clube União Suzano, commonly known as ECUS, is a Brazilian football and volleyball club based in Suzano, São Paulo state.

The men's volleyball team won the Superliga Brasileira de Voleibol once.

ECUS men's team, adopting the name Report/Suzano, won the Superliga Brasileira de Voleibol in the 1996-1997 season.

Esporte Clube União Suzano play their home games at Estádio Francisco Marques Figueira, nicknamed Suzanão.

[2] The main rival of ECUS is União Suzano (USAC) with whom does O Clássico dos Gemeos (English: The classic of the twins)