Guillermo Graaven (born 17 January 1982 in Amsterdam) is a Dutch footballer who played as a striker. After progressing through the AFC Ajax young academy, he joined Ipswich Town with fellow Dutchman Nabil Abidallah. He left the English club without playing for the senior team after being arrested on suspicion of rape but ultimately not charged during his stay and debuted in professional football in his native country at TOP Oss after unsuccessful trials with Motherwell, Standard Liège and Anderlecht. Later, he played for other Dutch clubs at the Eerste Divisie and amateur leagues before retiring in 2010.