Larry Shay (né Lawrence Fredrick Schaetzlein; August 10, 1897 – February 22, 1988) was an American songwriter born in Chicago, Illinois. He studied piano at the Bush Conservatory of Music in Chicago before moving to New York City to pursue a career in songwriting. Shay's first composition, "Do You, Don't You, Will You, Won't You," was published in 1923. In 1925, he joined the American Society of Composers, Authors and Publishers (ASCAP) and remained a member for 63 years. He is best known for co-authoring the song "When You're Smiling" in 1929, a collaboration with Joe Goodwin and Mark Fisher.

In the 1930s, Shay was hired by Metro-Goldwyn-Mayer as their music director, prompting a move to Hollywood with his wife, Doris. During his tenure at MGM, he hired Bing Crosby for his first picture. Throughout his career, Shay published over 300 songs and was represented in the Discography of American Historical Recordings as a composer, songwriter, and vocalist. He passed away in Newport Beach, California, leaving behind a daughter, Dawn Russum, who is the president of the Channel Cities Jazz Society in Ventura, California.