M. (Margaret) Pettee Olsen is an American abstract painter whose work investigates gestural abstraction, perceptual instability, and conceptual disruption. Working from her studio in Litchfield County, Connecticut, she builds paintings that introduce competing visual languages into gestural abstraction — spray paint interrupting brushwork, hard-edge geometry arresting improvised mark-making, layers accumulating and dissolving, leaving traces of revision that cannot be fully decoded. Pettee Olsen holds a BFA in Painting from the Rhode Island School of Design, where she was introduced to Susan Rothenberg, whose visits to her studio opened early conversations about movement and psychologically evocative painting. She holds an MA from Columbia University, where she subsequently taught painting, and co-founded Oberon Press LTD in TriBeCa, where daily engagement with the printing projects of Frank Stella, Barbara Kruger, and James Rosenquist proved foundational to a practice built on multiple visual languages in collision. Recent exhibitions include a solo show at The Garrison Art Center, New York (2024); a four-person exhibition at Vassar College's Palmer Gallery (2023); and a group show at Art Cake/M. David & Co., Brooklyn, curated by John Yau (2025). She is a fellow of the Ucross Foundation. Her work has been exhibited at Columbia University, Vassar College, the Rhode Island School of Design, the Boulder Museum of Contemporary Art, and the Center for Visual Art at Metropolitan State University, among others. She lives and works in Litchfield County, Connecticut.