Marcelle Bittar de Almeida (born May 5, 1981 in Guarapuava, Paraná, Brazil), better known as Marcelle Bittar, is a Brazilian fashion model of Lebanese descent.
In 1996, Bittar was registered by her mother in an Elite Model Management contest and subsequently joined the agency casting at only 14 years old. Her other agencies include Ford (New York, Miami), Women (Milan), Select (London), Mega (Hamburg), and Ten Model Management Agency, which is her mother's agency. In 2001, Bittar was nominated for the Abit Fashion Awards for the best female model. That same year, she participated in the São Paulo Fashion Week/Breast Cancer campaign at Alvo da Moda.