"Step" is a song recorded by South Korean girl group Kara for their third studio album, Step (2011). It was released as the lead single on September 6, 2011 to online music sites. The song was ranked fourteenth on the List of 21 Greatest K-pop Songs of All Time by Spin. An arranged version of "Step" is featured in the international arcade music game, DJ Max Technika 3 and Pump It Up Fiesta 2.

On August 4, 2011, the group confirmed that they will be releasing their third official album on mid-September and will resume their activities in South Korea for the first time in over six months. It was also reported by industry representatives that the group has been recording songs for the album during their spare time while they were busy promoting their fourth Japanese single, "Go Go Summer!". DSP Media responded to the news by stating that the group are in the process of reviewing which song is to be used as the lead song from the album.

Regarding the concept of the album and its title track, the group was faced with a choice between maintaining their usual bright, cute and youthful concept which Kara was popular for in South Korea or transforming into something new and unique.

On August 22, "Step" was eventually announced by DSP Media as the lead single for the group's third full-length album, titled "Step", slated for release on September 6. The song was also included onto the limited edition of the group's second Japanese studio album, Super Girl. The Japanese version of the song was eventually released on February 29, 2012 and is also included as a bonus track on the group's sixth Japanese single, "Speed Up / Girl's Power".

The full music video officially premiered on September 6. The video features the group dancing in front of microphones while dressed in deep blue clothes with some colorful patterns around it. In the background, there are bright lighting signs that show the names of the group's past hit songs. In other scenes the group can be seen individually in a bright room with colored walling dressed in colored neon clothing while jumping up. During the bridge of the song the girls are seen dressed in glittering dresses and holding onto microphone stands in a plain white room.

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