Marcelo Antonio Trobbiani Ughetto (born 17 February 1955 in Casilda, Santa Fe) is an Argentine football coach and a former player, who played as an attacking midfielder.

In 1975, Trobbiani shared Boca's midfield with Benítez, Suñé and Potente, and was criticized for hogging the ball, to the point that fans called him calesita (merry-go-round).

Boca used the money to buy many players in the local market, starting a major winning streak with coach Juan Carlos Lorenzo.

Coach Carlos Bilardo made Trobbiani play as a deep-lying centre-forward linking the strong midfield (Russo, Ponce and Sabella) to strikers Trama and Gottardi.

On March 20, 2011, he was involved in a bitter dispute with fellow Argentine manager Guillermo Rivarola of Sporting Cristal after the ex-River player complained to the referee in order to get Trobbiani sent off.

[7] On September 18, 2013, as coach of Sport Huancayo, he was accused of racism and discrimination by three Brazilian players, Rafael Da Silva, Andrey Nunes y Kleyr Vieira, who played in the team.