Charles Jay Connick (1875–1945) was a prominent American painter, muralist, and designer best known for his work in stained glass in the Gothic Revival style.

Connick's work is contained in many preeminent churches and chapels, including examples in Boston, Chicago, Detroit, New York City, Pittsburgh, San Francisco, Seattle, and Washington, D.C.[3] He also authored the book Adventures in Light and Color in 1937.

[11] Connick also authored the book Adventures in Light and Color, modestly subtitled An Introduction to the Stained Glass Craft, as well as a series for Random House titled International Studio (1923–24).

[12] For one of a pair of windows for the Newtonville Branch Library, in Newton, Massachusetts, Connick included in the glass the opening line of Frost's poem "Mending Wall" .

He employed a technique of "staggered" solder-joints in his leading and bars, which English stained-glass historian Peter Cormack says gives the windows their "syncopated or 'swinging' character.

Connick expressed the opinion that the first job of stained glass was to serve the architectural effect, and he believed that his greatest contribution to glasswork was "rescuing it from the abysmal depth of opalescent picture windows" of the sort popularized by Louis Comfort Tiffany and John La Farge.

"[16] A reporter visiting his studio in 1931 remarked on the atmosphere of mutual respect that was present there saying "Attitude to his co-designers [is] that of one artist to another...He [Connick] originates, supervises.

The studio closed its workshop in 1986 because the workers were aging and the modern high-rises of Copley Square threatened the light source essential to their work.

Its mission is to "promote the true understanding of the glorious medium of color and light and to preserve and perpetuate the Connick tradition of stained glass.