Cennamo () is an Italian surname derived from Old Italian for 'cinnamon' (Latin ), probably applied as a metonymic occupational name for a spicer. Notable people with the surname include:

Louis Cennamo (born 1946), English bass guitarist Luigi Cennamo (born 1980), Greek-Italian-German footballer Mary Robison (; born 1949), American short story writer and novelist Tony Cennamo (1933–2010), American jazz disc jockey

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