"Come on Over" is a song by American recording artist Jessica Simpson from her sixth studio album, Do You Know. It was released on June 24, 2008 by Columbia Nashville as the lead single of the album. It was co-written by country music artist Rachel Proctor, Victoria Banks, and Simpson herself.

The song was moderately well-received. In the United States, "Come on Over" became the most-added song to country radio for the week of June 6, 2008, debuting at number 41 on the Billboard Hot Country Songs chart. It broke a record held by Miranda Lambert ("Me and Charlie Talking") and Brad Cotter ("I Meant To") for highest-debuting first chart entry by a solo artist; both artists debuted at number 42 on that same chart. On July 12, 2008, the song peaked at number sixty-five on the Billboard Hot 100.

The music video for "Come on Over", it was directed by Liz Friedlander and shot in Little Creek Ranch, California. The video begins with Simpson standing outside her house making a phone call to her love interest. She is then shown inside her house sitting next to the kitchen sink, looking out of the living room windows. In other shots, Simpson sings with a live backing band in a barn house, and sits on the back of a pick-up van. At the end of the video, she is shown sitting in a bathtub after a man is depicted leaving his car; his face is not shown. The song was nominated for a 2008 CMT fan-voted online award in the category of best "(What? I've Always Been Country) Crossover Artist".

After the release of her 2006 pop album A Public Affair, Simpson stated she wanted to go back to her roots and do country music because she "has been brought up around country music", and wants to give something back. Simpson had already sung country themed songs previous like "These Boots Are Made for Walkin'". "Come on Over" was co-written by country music artist Rachel Proctor, Victoria Banks and Simpson herself. The lyrics of the uptempo single focus on the narrator's paramour. Simpson said, "The fun thing about the song is that anxiety of wanting the guy to come over right then and there. Everybody's felt that before."

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