Born in Danvers, Massachusetts in 1972, Marc Dennis was one of five sons and grew up in and around Boston, Puerto Rico, New York, and New Jersey. His father was born and raised in Havana, Cuba in an orthodox Jewish family (often referred to as a "Jewban"), and immigrated to Dorchester, Massachusetts when he was 16 when Castro took control of the island. His mother was born and raised in Roxbury, Massachusetts in a reformed liberal Jewish family.
His works have been included in many solo and group exhibitions, art fairs and museums including; Art Basel, Miami Beach, FL; The Armory Show, New York; Frieze London, England; Untitled, Miami Beach, FL; Dallas Art Fair, Dallas, TX; Expo Chicago, IL; Art Crush, Aspen, CO; Intersect Aspen, CO; National Portrait Gallery, Smithsonian Institution of American Art, Washington, DC; The Institute of Contemporary Art, Boston, MA; Clay Arch Museum, Gyeongsangnam-do, South Korea; EMP Museum, Seattle, WA; The Japanese American National Museum, Los Angeles, CA; The San Jose Museum of Art, San Jose, CA; Suwon I Park Museum of Art, Suwon City, South Korea; The Daejeon City Art Museum, Daejeon, South Korea; Flag Foundation, New York, NY; The Berkshire Museum, Pittsfield, MA; The Honolulu Academy of Art, Honolulu, HI; John Michael Kohler Arts Center, Sheboygan, WI; and the Katonah Museum of Art, Katonah, NY.
His paintings are in numerous prominent private collections, including those of Glenn Fuhrman, John and Amy Phelan, Beth DeWoody, Neal Schott, Bill and Maria Bell, Larry Gagosian, Carl and Donna Hessel, David and Jennifer Stockman, Larry and Marilyn Fields, and Sean and Tammy McCarthy.
Dennis' work is also in many public collections such as; The Norton Museum of Art, Palm Beach, FL; The JP Morgan Chase Art Collection, New York, NY; The Neuberger Berman Collection, New York, NY; The UBS Corporate Art Collection, Zurich, Switzerland; The Blanton Museum of Art, University of Texas at Austin; The Portland Museum of Art, Portland, OR; The Springfield Museum of Art, Springfield, Ohio; The MIN Art Museum, Guadalajara, Mexico; The Flag Art Foundation, New York, NY: The Japanese American National Museum, Los Angeles, CA; The Memorial Art Gallery at the University of Rochester, NY; The Everhart Museum of Natural History, Science & Art, Scranton, PA; The Arnot Art Museum, Elmira, NY; The Rockwell Museum of Western Art, Corning, NY; Binney & Smith, Inc., Corporate Headquarters Collection, Easton, Pennsylvania; and the Iris & B. Gerald Cantor Center for Visual Arts at Stanford University, Palo Alto, California.
In 2017 he was awarded a commission from the Metropolitan Transit Authority of New York City to design and create 32 hand-painted glass windows and two large-scale mosaics for the Wantagh Train Station on the Long Island Railroad. In 2020 his painting "Billionaires Are People Too" was featured on a billboard in Los Angeles from February to May sponsored by the billboard creative of Los Angeles.
Dennis' paintings and practice have been reviewed in numerous publications, including; New York Magazine, The New York Times, Art News, Art in America, Time Magazine, Hispanic Business, The Wall Street Journal, American Art Collector, The Village Voice, Jewish Week, Whitehot Magazine, The Forward, Town & Country, XXL Magazine, Galerie Magazine; The Art Gorgeous; The Daily Beast, Hi-Fructose Magazine, W Magazine; The Hollywood Reporter, LA Weekly, Flavorpill, The Observer. In addition, his work was featured in Whitewall Magazine Spring 2020 issue; Elevated Lifestyle Magazine, Spring 2020 issue; Modern Painters "25 Artists to Watch" Spring 2013 issue; and was the cover artist for American Art Collector magazine April issue 2023, and Art Voices Spring 2015 issue.