Néstor Ariel Fabbri (born 29 April 1968) is an Argentine retired footballer who played as a defender.
In 2002, Fabbri moved to En Avant de Guingamp, at that time in the French first division.
He played one season for Guingamp with teammates like Didier Drogba or Florent Malouda and the team finished in seventh place.
With the Argentina national football team, "La Tota" Fabbri played 21 matches, including the 1990 FIFA World Cup, and scored 1 goal.
Fabbri worked as an agent for his nephew Jonathan Calleri, who plays as a forward for Brazilian club São Paulo.