Wallie Herzer (né Walter Henry Herzer; 15 April 1885 San Francisco – 15 October 1961 Redwood City, California) was an American composer of popular music, music publisher, and pianist. Herzer flourished in music prior to and during World War I.

The Columbia recording of his 1912 composition, "Everybody Two-Step" — performed by ragtime pianist Mike Bernard on December 2, 1912, in New York City — is the first recording of ragtime music. It became a hit and coincided at the start of a renewed craze for ragtime and dance — fifteen years after William Krell's "Mississippi Rag" had been published, the first known published music with "rag" in the title.

Herzer composed three other hits — a 1913 piano rag, "Tickle the Ivories" – which also became hit as a vocal arrangement; a 1914 foxtrot song, "Get Over, Sal"; and a 1916 Hawaiian waltz song, "Aloha Land". Other compositions — including his 1908 piano ragtime two-step and barn dance, "The Rah-Rah Boy", and his 1913 rag turkey trot, "Let's Dance" — were internationally distributed.