Ruth Leavitt Fallon (also known professionally as Ruth Leavitt) is an American computer artist.

Leavitt’s art studies focused on abstract impressionism. By 1967, she began producing art on mainframe computers, creating and transforming graphics by stretching and distorting the images. She later worked with personal computers. In 1976, Leavitt edited Artist and Computer, one of the earliest books about computer art, which showcased 35 artists and detailed how individuals could use computers to create new art forms and visual expressions. Within a few years, she produced film animations using her computer graphics and customized programs. In 1984, Leavitt was an instructor of computer art at SUNY Buffalo; her name was passed along to Don Beil and Tom Myers, who were looking to hire a graphic artist for their word processing program called Write Island. She developed the graphics for the game, a visual product for children to learn word processing. For the next few decades, Leavitt taught computer art courses and produced her own art pieces.

As of 2021, Ruth Leavitt Fallon resides in Maryland and continues to create art.