Porto Novo may refer to the following places:

• Porto-Novo, the capital of Benin
• Porto Novo, Cape Verde, a city on the island of Santo Antão, Cape Verde
• Portonovo, a village in Sanxenxo, Galicia, Spain
• Porto Novo, the former name of Parangipettai, a town in Tamil Nadu, India
• Porto Novo do Cunha, the former name of Além Paraíba in the state of Minas Gerais, Brazil

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