"Jealous" is a song performed by American recording artist Nick Jonas for his eponymous second studio album.

The song is also included as a bonus track on the UK deluxe version of Last Year Was Complicated, along with "Chains" and "Levels".

Jonas believes his feelings were elated filming the TV series 'Kingdom', stating, "At the time I wrote and recorded it, I was in the middle of all the training for 'Kingdom,' so I was really sort of hyped up on testosterone.

"[6][7] Jonas played a 30-second preview of "Jealous" during an interview on the nationally syndicated radio program On Air with Ryan Seacrest on September 4, 2014.

The real message is that jealousy is something we all feel from all different walks of life, whether it's about romance or love or family or whatever it is — insecurities.

"[10] On August 24, 2014, it was announced that the music video would be released on September 16 and is directed by Peter Tunney and Ryan Pallotta.

[22] On November 5, Jonas performed the remix of the song live on television for the first time with Tinashe at 106 & Park,[23] marking his first appearance on the show.

[27] He also performed the song live at Dick Clark's New Year's Rockin' Eve with Ryan Seacrest 2015 alongside his new single Teacher.

[32] On April 13, 2015, he performed the song live in the United Kingdom as part of his album launch party.

[38] During her second concert in New Jersey as part of The 1989 World Tour Taylor Swift invited Jonas on stage and they sang the song together.

[42] On February 18, music group Postmodern Jukebox made a vintage Motown-inspired cover of the song.

[43] In Top 20 Live Playoffs, Lowell Oakley covered this song April 2015 on The Voice Season 8.

[44] Harana member Michael Pangilinan performed this song while impersonating Nick Jonas, in the third week of the second season of the Philippine edition of Your Face Sounds Familiar.

English singer Jessie Ware covered the song for BBC's Radio 1's Live Lounge 2015.

Post-Hardcore band Dayseeker posted their cover on March 9, 2015, via InVogue Records's YouTube channel.

The remix received generally favorable reviews from music critics, who felt that it complimented the album version.

On November 4, Jonas held a Q&A online where he announced that Jealous would get an official remix featuring American singer Tinashe.

[50] Justin Davis of Complex wrote that Tinashe added her own female touch to the bouncy song, giving the other side of the story for Jonas' ode to being protective over his romantic conquests by sympathizing with her own admission of jealousy.

[51] Radio.com columnist Courtney E. Smith wrote that the Hip-hop's up-and-coming it girl puts an extra sexy spin on the former Jonas Brother's angsty single, adding herself to the chorus and turning the music's Prince factor up to 10.