Eric Walter Blom was a Swiss-born British-naturalised music lexicographer, music critic and writer. He is best known as the editor of the 5th edition of Grove's Dictionary of Music and Musicians (1954).

The New Grove Dictionary of Music and Musicians is an encyclopedic dictionary of music and musicians. Along with the German-language Die Musik in Geschichte und Gegenwart, it is one of the largest reference works on the history and theory of music. Earlier editions were published under the titles A Dictionary of Music and Musicians, and Grove's Dictionary of Music and Musicians; the work has gone through several editions since the 19th century and is widely used. In recent years it has been made available as an electronic resource called Grove Music Online, which is now an important part of Oxford Music Online.