Maureen Anne McDonald (born May 13, 1981), better known as Mozella, is an American songwriter and singer. Along with her album releases, Mozella co-wrote Miley Cyrus' 2013 single "Wrecking Ball", which peaked atop the Billboard Hot 100. She has also co-written Charlie Puth's 2015 single "One Call Away", as well as One Direction's "Perfect" that same year.

Some of Mozella's other co-writes include the songs, "I Believe", "Strangers", "Every Single Time, and "Don't Throw It Away" for the Jonas Brothers' album Happiness Begins (2019), "Drop Top" and "Horses" on Keith Urban's Graffiti U album, Pink’s "Cover Me In Sunshine", Kelly Clarkson's 2017 single "Love So Soft", "One Call Away" by Charlie Puth, "Fool's Gold" and "Perfect" by One Direction, "Bright" by Echosmith, Ellie Goulding's "Don't Panic", "Holding on for Life", and "We Can't Move to This" from Goulding's album Delirium (co-wrote with Goulding and Greg Kurstin), "Feels Like Vegas" with Tinashe, and "Take You High" off Kelly Clarkson's 2015 album, Piece by Piece. Madonna and Mozella co-wrote eleven of the nineteen tracks on the album Rebel Heart, including the single "Living for Love" with Diplo, Ariel Rechtshaid, and Toby Gad.

In the genres of film, television and theater, she co-wrote "A Little Party Never Killed Nobody" with Goonrock and Fergie for Baz Luhrmann's The Great Gatsby. In early 2014 she continued her work with Baz Luhrmann, penning "A Beautiful Surprise" with David Foster for Luhrmann's musical theater adaption of his cult classic film Strictly Ballroom. She also co-wrote "Dancing in the Dark" by Rihanna for the DreamWorks animated movie Home, in 2015.

Mozella's song "Anything is Possible" is used in the 2018 L’Oreal El Vive commercials. Her song "Love Is Endless" was used in the 2015 McDonald's "Archenemies" television campaign. Beginning April 2015, Chase Bank used her song "Can't Get Enough" for their new commercials in the US. Some of the brands that have used Mozella's music in their branding include Chrysler, Verizon, Microsoft, Mercedes-Benz, and JC Penney.

Mozella has released three full-length albums, I Will (Warner/Maverick, 2006), Belle Isle (Universal/Motown, 2009), and The Brian Holland Sessions (Belle Isle Records, 2012), as well as three EPs, Mozella (Warner/Maverick, 2005), The Straits (Universal/Motown, 2009) and The Love (Universal/Motown, 2010).