The Orange County Museum of Art (OCMA) is a visual arts museum that opened October 2022 in Costa Mesa. The museum's collection comprises more than 4,500 objects, with a concentration on the art of California from the early 20th century to present. Exhibits include traditional paintings, sculptures and photography, as well as new media in the form of video, digital and installation art. In addition to its contributions to the field of contemporary art, the museum has also organized and hosted exhibitions of modern art and design. Due to a generous endowment, admission to OCMA is free for at least the next 10 years.

A 1.64-acre parcel of land on part of the Segerstrom Center for the Arts campus was given to the Orange County Museum of Art in 2008. The facility will be wholly owned and operated by the Orange County Museum of Art as an autonomous organization within Segerstrom Center for the Arts. OCMA is located in Costa Mesa adjacent to the Renée and Henry Segerstrom Concert Hall, with extensive frontage along the Avenue of the Arts.

OCMA presents critically acclaimed exhibitions such as Picasso to Pollock: Modern Masterpieces from the Wadsworth Atheneum Museum of Art, Mary Heilmann: To Be Someone, Birth of the Cool: Art Design, and Culture at Midcentury. The museum’s art exhibitions attract more than 40,000 visitors annually. OCMA's collection includes nearly 2,500 art objects that focus on original artwork made in California from the early 20th century to the present. Approximately 15,000 children and adults also participate in award-winning education programs.

Exhibits at OCMA include traditional paintings, sculptures and photography as well as new media in the form of video, digital and installation art. Each month the museum hosts events such as special activities for children, Thursday evening lectures and artists' talks.