Mariette Petra Carola Hansson (born 23 January 1983), sometimes credited as MaryJet or simply Mariette, is a Swedish singer and songwriter. Hansson participated in Sikta mot stjärnorna (Swedish pre-selection for European Soundmix Show) in 1999 imitating singer Amanda Marshall. She is perhaps best known for participating in Idol 2009 and a year later, being announced as “homo of the year” at the QX Gaygala in Stockholm.

In 2013 she played guitar in Magnus Ugglas band during his show “Magnus Den Store” at Hamburger Börs in Stockholm. The next year she toured along with Ace Wilder who placed second in Melodifestivalen 2014, the Swedish pre-selection for the Eurovision Song Contest.

She then participated as a solo singer in Melodifestivalen 2015 with the song “Don’t Stop Believing”, and reached the 3rd place in the final. She made a comeback to Melodifestivalen in 2017 with “A Million Years”, which placed 4th. She took part once again in 2018 with “For You”.