"너라고 (It's You)" is a digital single by Korean boy band Super Junior. It is the second promotional single for the group's third studio album Sorry, Sorry and was digitally released on May 11, 2009. Three new tracks were added to the single on May 14, 2009, the same day as the physical release of the repackaged version of Sorry, Sorry.

"It's You" is written and produced by E-Tribe, the same composer who wrote several chart-topping songs. The collaboration was first announced on April 21, in which the group described the song to be "a mellow but trendy dance song" and very unlike the lively songs that E-Tribe has previously written for female singers. The song incorporates heavy electronic influences to a MIDI sequence, and it is expected to earn the same success as the urban funk song "Sorry, Sorry."

On May 9, 2009 the full-length single of "It's You" and screen shots of the respective music video were leaked on the Internet. Despite the leak, the single was officially released as a digital single on May 11, 2009, and quickly became the #1 song on Cyworld after only four hours of release. Two days later, the single reached top 5 on Mnet's Top 300 Chart, ranking #4. The first promotional performance for "It's You" was on May 17, 2009 on the SBS music program, Popular Songs (인기가요). On May 22, "It's You" was performed on Music Bank for the first, followed by the song's first award as #1 song of the week on the Music Bank weekly K-Chart. A week later, the song reached #1 on the Take 7 Chart for Popular Songs. The single also stayed as #1 in Thailand's Channel V Countdown Asia Chart for three consecutive weeks. On October 7, 2009, in a daily countdown by MYX Philippines, "It's You" peaked at #1, with only a 0.53% lead with Taylor Swift's You Belong With Me, which ranked #2 on that day. While on MYX's international countdown, "It's You" peaked at #2, their highest ranking song on MYX, after "Sorry, Sorry" peaked only at #6 on the said countdown. It is also the 12th most voted international video on MYX's international year-end countdown, and 19th overall most voted music video of the year also in MYX's hit year-end countdown in 2009 (and the 3rd most voted K-Pop music video, second being "Nobody" by the Wonder Girls and the first being "Fire", by 2NE1).

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