Nadav Guedj (Hebrew: נדב גדג'; born 2 November 1998) is an Israeli singer and actor who represented Israel in the Eurovision Song Contest 2015, where he finished in 9th place.

Nadav entered the second season HaKokhav HaBa, the Israeli national selections for Eurovision Song Contest 2015 where he became one of the sixteen finalists.

[9][10] On 21 May 2015, Nadav performed in the Eurovision song contest's second semi-final in Vienna and he has successfully made Israel reach the final for the first time in five years.

[11] Nadav's postcard was filmed on location in Tel Aviv and the renowned skiing resort Lech am Arlberg in Vorarlberg, where Guedj is seen spray painting a gondola lift with the Austrian cartoon artist and musician Bernd Püribauer.

On 28 July 2019, he released the third single from his second album, "38 Ma'alot", which serves as the theme song for the Israeli movie Full Gas, which includes Guedj as an actor.

Nadav frequently listens to music of the R&B, pop, soul and hip hop genres and cites Pharrell Williams, Usher, Beyoncé, Chris Brown, Maroon 5, Snoop Dogg, Stevie Wonder, Michael Jackson, Justin Timberlake, Timbaland and others as his favorite artists.

He is hailed in his home country as the "Israeli Justin Timberlake" because of the similarity of his musical style, but he describes himself as "simple and regular Nadav".