Marco Antonio Núñez Lozano (born 2 September 1966) is a Chilean politician.

He subsequently went to the United States and obtained a Master in Public Health from Harvard University in 1998.

Four years later he obtained a PhD in Public Health Politics from Johns Hopkins University.

[4] Regarding a receipts scandal of parliamentarians Núñez stated that there were likely to be several politicians who should step down from office.

[5] Later during his presidency of the Chamber of Deputies Núñez stated he wanted Chile to have one of the five most transparent parliaments worldwide.