Enzo Cacialli from Don Ernesto pizzeria ran towards the Popemobile with a freshly cooked pizza as it passed. The Pope accepted the gift and the chef pumped his fist in the air as crowds cheered.
The stunt comes after the Holy Father said he missed going out for a pizza on Mexican television earlier in the month.
Mr Cacialli told Naples' Il Mattino newspaper that he had chosen yellow tomatoes instead of traditional red to reflect the colours of the Holy See.
It is unclear whether the Pope ate the pizza.
