Małgorzata Jamroży (Polish: [mawɡɔˈʐata jamˈrɔʐɨ]; born 30 June 1991), known professionally as Margaret, is a Polish singer and songwriter. Before her mainstream debut, she performed with underground bands, recorded soundtracks for television commercials and films, and produced a fashion blog. Through her blogging, she was discovered by a talent agent who helped her secure a record deal with the label Extensive Music in 2012. She rose to prominence the following year with the single "Thank You Very Much", which was a moderate chart success in some European territories.

Under her contract with Extensive Music, Margaret recorded two studio albums: Add the Blonde (2014) and Monkey Business (2017). Both reached the top 10 in the Polish charts, and spawned the singles "Wasted", "Start a Fire", "Heartbeat", "What You Do" and "Byle jak". She also collaborated with Matt Dusk on the jazz album Just the Two of Us (2015). After signing an international record deal with Warner Music to release her 2016 single "Cool Me Down", Margaret became particularly successful in Sweden. She participated in the country's music competition Melodifestivalen twice with the songs "In My Cabana" and "Tempo" in 2018 and 2019, respectively. Seeking more control over artistic creativity, she left her record label and management in 2019, and eschewed mainstream pop for urban music on the Polish-language albums Gaja Hornby (2019) and Maggie Vision (2021); the latter became her highest-charting album to date and featured the ZPAV-certified singles "Reksiu" and "Roadster". Following this genre shift, Margaret re-emerged in the top 40 with the 2021 single "Tak na oko". She joined the hip hop collective club2020 for a commercially successful record in 2023, and returned to radio-friendly pop with her 2024 sixth studio album, Siniaki i cekiny, which yielded the chart-topping single "Tańcz głupia".

Margaret has received numerous accolades, including five Eska Music Awards, a Kids' Choice Award and four MTV Europe Music Awards for Best Polish Act—more than any other artist in this category. She was included on a 2014 list of the 100 most-valuable stars of Polish show business compiled by the Polish edition of Forbes. In 2015, the Polish magazine Wprost named her one of the 50 most-influential Polish celebrities, and Glamour Poland honoured her with the title of Fashion Icon. Alongside her music career, Margaret has endorsed numerous products, served as a coach on The Voice of Poland in 2019, and starred in the 2022 film Zadra. In 2020, she founded the record label Gaja Hornby Records with her husband and musician Kacezet, and as an advocate for the LGBT community, she launched the annual series "Tęczowa Szkoła Maggie" to honour Pride Month.