Francisco Xavier de Luna Pizarro (November 3, 1780 – February 2, 1855) was a Peruvian priest, politician and lawyer.

He served as Archbishop of Lima from 1846 to 1855, deputy for Cusco and Arequipa, and President of the Constituent Congresses of 1822, 1828 and 1834.

Educated in his native city and later at the University of Cusco, he taught theology and law at the seminary of Arequipa.

When he returned to Peru he was named rector of the College of Medicine of San Fernando.

He then participated in the efforts for the independence of Peru and was the president of the first Constituent Congress of 1822,[1] and wrote the constitution of 1823.