The Bates College Museum of Art is an art museum located on the campus of, and maintained by, Bates College in Lewiston, Maine. The museum's collection consists of works of art that showcase Maine as well as art from around the world, with a focus on modern and contemporary work. It holds 8,000 pieces and objects of contemporary domestic and international art. The museum holds over 100 original artworks, photographs, and sketches from Marsden Hartley. The primary focuses of the main collection are works on paper, including drawings, prints and photographs. The museum hosts a number of exhibitions each year and publishes catalogues for select shows. Additionally, the museum offers numerous lectures, artist symposiums, and workshops.

The museum galleries are divided into three sections: the larger Upper Gallery, the smaller Lower Gallery, and the Synergy Gallery which is primarily used for student exhibits and research. Almost 20,000 visitors are attracted to the MoA annually.

The Bates College Museum of Art was founded in 1955 as the Treat Gallery in the newly constructed Pettigrew Building at Bates College. Norma Berger, the niece of Marsden Hartley, a notable Maine artist, donated a large collection at the founding of the museum. In 1986, the gallery moved to the new Olin Arts Center and adopted its current name. After the renovation and installation, the new and expanded space enabled the museum to organize major scholarly exhibitions of contemporary and historic artists. Over the past decade, the collection has grown to collect more art pieces of all mediums and support educational curriculum across disciplines.

As of 2023 the director of the museum is Dan Mills.

As of 2023, it holds over 8,000 objects, including select and growing holdings of contemporary Chinese art, pre-Columbian art, Japanese woodblock prints, and African art. In addition to the original Marsden Hartley Memorial Collection, the museum contains works by many other notable artists. The museum has focused on collecting works of Maine artists.

The Bates College Museum of Art also offers curricular involvement with both the college and surrounding communities. The college uses the museum's exhibitions and collections to "teach writing skills and visual literacy." In 2015, the Museum developed the Thousand Words Project, a series of videos aimed at elementary through high school students and teachers, which promotes the use of art to improve literacy and writing skills.

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  Mount David 1860, painted in 1901 by Delbert Dana Coombs. Mount David is a low mountain on the western edge of the Bates Campus
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  Intellectual Niece, 1939–40, by Marsden Hartley

• Official website
• https://www.bates.edu/thousand-words-project/

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