"Umbrella" is a song by Barbadian singer Rihanna from her third studio album Good Girl Gone Bad (2007). It features American rapper Jay Z, who co-wrote the song with its producers Tricky Stewart and Kuk Harrell, with additional writing from The-Dream. The song was originally written with Britney Spears in mind, but her label rejected it. "Umbrella" is a pop and R&B song with hip-hop and rock touches referring to a romantic and platonic relationship and the strength of that relationship.

Entertainment Weekly ranked the song number one on the 10 Best Singles of 2007, while Rolling Stone and Time listed the song at number three on the 100 Best Songs of 2007. The song has earned Rihanna several awards and nominations. In 2007, the song won two awards at the MTV Video Music Awards, when it was nominated for four. At the 2008 Grammy Awards, "Umbrella" also earned Rihanna and Jay Z a Grammy Award for Best Rap/Sung Collaboration in addition to receiving nominations for Record of the Year and Song of the Year. The song is also listed on Rolling Stone's The 500 Greatest Songs of All Time at 412.

The song serves as the lead single to the album, and was released worldwide on March 29, 2007 through Def Jam Recordings. "Umbrella" was a commercial success, topping the charts in Australia, Canada, Germany, Spain, the Republic of Ireland, Sweden, Switzerland, the United Kingdom, and the United States. In the United Kingdom, where the song's chart performance generated controversy when the country was experiencing excessive flooding and large amounts of rain at the time, it was one of the most played songs on radio in the 2000s (decade). It managed to stay at number one on the UK Singles Chart for 10 consecutive weeks, the longest run at number one for any single of that decade, and is also one of the few songs to top the chart for at least 10 weeks. The single was one of the highest digital debuts in the United States and remained at the top of the US Billboard Hot 100 for seven consecutive weeks.

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