Nui Sano (Japanese: 佐野 ぬい, romanized: Sano Nui; November 16, 1932 – August 23, 2023) was a Japanese yōga ("Western-style") painter. She was known for her rhythmic, abstract style and her frequent use of the color blue. A longtime instructor at the Joshibi University of Art and Design, she served as the school's president from 2007 to 2011.