Cecily Byk is a New Jersey-based watercolorist, illustrator and art instructor.

Born in Dallas, Texas, she moved at age 11 with her family to Kailua on the island of Oahu. She grew up there and at other areas in Hawaii, where she attended Hawaii Loa College in Honolulu. Returning to the United States, Byk lived in New Jersey, eventually moving to Brooklyn to attend Pratt Institute, where she majored in illustration and received a Bachelor of Fine Arts degree.

In the mid-1990s, Byk embarked on a career as a professional illustrator and portrait artist, working in oils, watercolor, pencil and charcoal with a focus on fantasy, floral and figure painting. In 2009, her work was seen in Blue Bell, Pennsylvania, at the annual member's show of the Philadelphia Watercolor Society. She has exhibited throughout New Jersey in shows by the Garden State Watercolor Society and the Northeast Watercolor Society. She is also represented in private collections.

In addition to creating banners, ads and catalog illustrations for the Girl Scouts, Byk has illustrated several books by Margie Bissinger. In 2003, she began teaching drawing and watercolor painting to beginning and experienced artists in classroom and private settings, including her "Drawing on the Right Side of the Brain" classes.

An associate member of the American Watercolor Society, she is also a member of the New Jersey Watercolor Society and the Northeast Watercolor Society.