Esporte Clube Operário de Mafra

Clube Atletico Operário, commonly former EC Operário de Mafra, is a Brazilian football club based in Mafra, Santa Catarina state. The club was formerly known as Sociedade Esportiva e Recreativa Operários Mafrenses and Clube Atlético Operário.

History
The club was founded on May 12, 1897, is Clube Atlético Operário, in the 1990s it was renamed to Sociedade Esportiva e Recreativa Operários Mafrenses, but the club's logo still depicts the acronym CAO, meaning Clube Atlético Operário. They won the Campeonato Catarinense Third Level in 1913, 1947, 1996.

Achievements

 * Campeonato Catarinense:
 * Winners (1): 1956

Stadium
Clube Atlético Operário play their home games at Estádio Alfredo Herbst. The stadium has a maximum capacity of 3,000 people.