Peter Flaccus was born in 1947 in Missoula, Montana (USA). He studied at the Skowhegan School of Painting and Sculpture, received a B.A. degree from Amherst College and an M.F.A. from Indiana University.
He began his artistic career in New York in the early 1970’s, exhibiting in several galleries, including the Zabriskie Gallery and the Monique Knowlton Gallery. He was awarded grants from the New York Foundation for the Arts, and residencies at both the Yaddo and MacDowell art colonies. In 1989 he curated the exhibition Belief in Paint at the Bennington College Art Museum.
At the beginning of the 1990’s, he moved to Rome, and began painting exclusively in the medium of encaustic, for which he has become well-known.
In Europe, Peter Flaccus has had solo exhibitions in Switzerland (Vevey 2021, Lugano 2017, Lenzburg 2004, Malans 2002) and France (Amilly 2009). In Italy, other recent solo exhibitions include: Maja Arte Contemporanea (Roma 2019), Palazzo Cerio/Intragallery (Capri 2015), Intragallery (Napoli 2014-2015), Galleria Otto (Bologna 2014), Galleria La Nube di Oort (Roma 2014), Galleria Monty&Company (Roma 2014), Ninni Esposito Arte Contemporanea (Bari 2009, 2004, 2002, 2000), la Casa delle Letterature (Roma 2009), Il Frantoio di Capalbio (Toscana 2007).
Authors who have written on his work include Annemarie Sauzeau, Donald Kuspit, Grace Glueck, Brunella Antomarini, Jacqueline Risset, Rosa Pierno, Carlo Alberto Bucci, Maria Ida Gaeta, Tanja Lelgemann, Stephen Westfall, Gabriele Simongini, Alan Singer, Marcello Barison, Susan Stewart and many others.
From 1994 to 2020 Peter Flaccus was a professor of studio art at John Cabot University, Rome.