Humming Urban Stereo (Korean: 허밍 어반 스테레오) is a South Korean electropop band. The group was founded on February 15, 2004 in Seoul by Lee Jeereen. The band consists of Lee and (mostly female) guest vocalists. Lee "sings, writes, composes, and arranges [the] music." The most common guest vocalists are Shina-E and Humming Girl, who are considered part of the band.

Humming Urban Stereo's first album was Very Very Nice! and Short Cake, released in January 2005. Its most popular song, Hawaiian Couple, a top ten hit that reportedly sold over 500 000 downloads, came from the band's second album, Purple Drop, released in March 2006. Hawaiian Couple was also featured in the film My Love, a popular 2007 South Korean romantic comedy, directed by Lee Han.