Mariel Fitz Patrick, Argentina, is a journalist who has specialized in investigation and data journalism. She currently works at Infobae Argentina as part of the Infobae Data Unit. She also participates as a political columnist on CNN Radio Argentina’s program, "Hora 10".

Fitz Patrick has worked in different graphic media, magazines and TV news programs. She was part of the journalistic team of the TV program "Periodismo para Todos", hosted by Jorge Lanata, and the winner of various national and international awards.

For her work on TV, she was twice nominated for the Martin Fierro Television Award for best female journalistic work. She was awarded the Fopea Prize of Investigative Journalism in 2019, and as part of the Argentinian ICIJ team, in 2020 and 2022.