"Eat You Up" is a song recorded by South Korean recording artist BoA for her twelfth studio and debut English eponymous studio album (2009). It was released on October 16, 2008 in Japan as the lead single from the album. The song was written by Remee and Thomas Troelsen, while production was handled by Henrik Jonback. The song was BoA's first attempt into the Western market, particularly North America. Musically, the track was described as an electronic dance song with elements of R&B.

Upon its release, "Eat You Up" garnered positive reviews from music critics. Many critics commended the song's electronic and dance-infused composition, and praised the song's commercial appeals; they also felt it was a choice to release through Western markets, and felt BoA's English skills had improved. It was successful on the US Billboard Dance Club Songs chart, peaking at number eight and staying in the chart for 12 consecutive weeks.

Two music videos were created for the single; the first had BoA dancing in ballet recital with back-up dancers, whilst the second has her dancing in a utopian-inspired planet. BoA performed the single during several of her concerts, including her Nowness and Who's Back? concert tours. Since its release, the song has received several recognitions and has been listed on several best lists by Eastern and Western publications. "Eat You Up" is one of the first songs by a Korean artist to be produced and written by Western producers, and is recognized as a key factor to the Korean Wave movement.

In January 2008, publications in South Korea reported that BoA was planning on her North American debut. However, the head of BoA's label SM Entertainment, Lee Soo Man, denied the claims, saying that BoA was continuing work in Asian markets. South Korean publications started to surface once again about her North American debut, after SM Entertainment announced their US subsidiary label. On September 2, 2008, SM Entertainment officially announced BoA's North American debut under their subsidiary label. Ten days later, a press conference was held at the Seoul Imperial Palace Hotel to further clarify her plans. During her press conference, SM Entertainment announced that a song entitled "Eat You Up" was chosen as her debut English single. "Eat You Up" was first released on Japanese radio stations Tokyo-FM and JFN 38 Station on October 16. It was originally set for release on October 14, 2008 in the US, but was then pushed back to October 21, 2008.

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