FO Vrilissia, full name Filathlitikos Omilos Vrilissia (Greek: Φιλαθλητικός Όμιλος Βριλησσίων) is a Greek volleyball club based in Vrilissia in the regional unit of North Athens, Attica.

It is mainly active in women volleyball and it is one of the most successful clubs in this sport.

FO Vrilissia has won 9 Panhellenic titles in women volleyball (5 championships and 4 cups).

[1][2] Despite its successful presence the club retreated from the championship in season 2014-15 due to financial problems and relegated to second tier championship (A2 Ethniki).

[4] It returned in 2011 but four years later withdrew again from the championship and relegated in A2 Ethniki.