Mai Therese Shanley (born February 17, 1963), Miss New Mexico USA, Miss USA 1984, is a former beauty queen. Her mother is ethnically Taiwanese and is from Taiwan, while her father is Irish and was born in Ireland. Shanley's first pageant experience came when she represented New Mexico in the Miss America pageant in 1983. She did not place in that pageant.
Later, Shanley became the first Eurasian delegate to win Miss USA. She was 21 at the time she was crowned the 33rd Winner at the pageant held in Lakeland, Florida, on May 17, 1984. She also edged out two former Miss America state titleholders in the top five, Kelly Anderson (Miss West Virginia 1982) and Desiree Denise Daniels (Miss Tennessee 1982), who placed second and third, respectively.
Shanley went on to compete at the Miss Universe Pageant in Miami, FL in July 1984, where she was a semi-finalist. Her younger sister, Siobhan, was also a beauty pageant winner, holding the title of Miss Otero County (New Mexico) while Mai was Miss USA.