21 Under 21 is an annually ranking by American music magazine Billboard beginning in 2010. It honours young musicians under the age of 21 in the music for impact over the previous and their potential to "rule pop culture zeitgeist over the next 12 months".

Taylor Swift topped the first ranking in 2010 at age 20. Justin Bieber (2011), Lorde (2014) and Billie Eilish (2019) are the youngest acts to be #1 (all aged 17). Willow Smith is the youngest act to appear on any ranking, (aged 9 in 2010). Smith also has the longest period of inclusion, appearing on five rankings across 11 years (2010, 2011, 2017, 2019 and 2021). Bieber; Camila Cabello; Billie Eilish; Lorde; Shawn Mendes; Smith and Grace VanderWaal are tied for the most appearances, with five each. Bieber and Mendes are the only acts to top the ranking more than once (twice each).

Poll results by year edit

Place 2010[1] 2011[2] 2012[3] 2013[4] 2014[5]
1 Taylor Swift Justin Bieber One Direction Lorde
2 Justin Bieber Tyler, the Creator One Direction Justin Bieber 5 Seconds of Summer
3 Selena Gomez Demi Lovato Miley Cyrus Justin Bieber
4 Jake Zyrus [a] Scotty McCreery Ariana Grande Martin Garrix
5 Soulja Boy Jackie Evancho Mac Miller Earl Sweatshirt Fifth Harmony
6 Nick Jonas Mac Miller Selena Gomez Lorde Austin Mahone
7 Willow Smith Demi Lovato Porter Robinson Austin Mahone Earl Sweatshirt
8 Demi Lovato Nick Jonas Cher Lloyd Scotty McCreery Shawn Mendes
9 Greyson Chance Rye Rye Earl Sweatshirt Cody Simpson Becky G
10 Miley Cyrus Victoria Justice Nick Jonas Emblem3 Chief Keef
11 Lex Lugler Jackie Evancho Cher Lloyd Luis Coronel
12 Taylor Momsen Il Volo Cody Simpson Chief Keef Meghan Trainor
13 Chris Colfer Cody Simpson Mindless Behaviour Bridgit Mendler Cody Simpson
14 Miranda Cosgrove Willow Smith Megan & Liz Miguelito Madeon
15 Diggy Simmons Greyson Chance IU Joey Bada$$ Bobby Shmurda
16 Wonder Girls Mindless Behaviour Bridgit Mendler Tori Kelly Scotty McCreery
17 Never Shout Never HyunA 3Ball MTY Martin Garrix Troye Sivan
18 New Boyz Porter Robinson Miley Cyrus Mindless Behaviour Rae Sremmurd
19 Nikki Yanofsky One Direction Madeon Matty B Akdong Musician
20 Cody Simpson Miguelito Ross Lynch Lee Hi The Vamps
21 Sean Kingston Miley Cyrus Victoria Justice Fifth Harmony Unlocking the Truth
Place 2015[7] 2016[8] 2017[9] 2018[10] 2019[11]
1 5 Seconds of Summer Fifth Harmony Shawn Mendes Billie Eilish
2 Fifth Harmony Shawn Mendes Lorde Khalid Lil Nas X
3 Lorde Desiigner Khalid Lil Pump Juice WRLD
4 Shawn Mendes Martin Garrix Lil Yachty Billie Eilish Lil Pump
5 Rae Sremmurd Daya Camila Cabello Juice WRLD Chloe x Halle
6 Troye Sivan Alessia Cara Kodak Black Bhad Bhabie Lil Tecca
7 Martin Garrix 5 Seconds of Summer Hailee Steinfeld Daya Mason Ramsey
8 Maddie & Tae Lorde Grace VanderWaal Sabrina Carpenter Bhad Bhabie
9 Joey Bada$$ Hailee Steinfeld CNCO Jaden Smith Christian Nodal
10 Hailee Steinfeld Zendaya Desiigner Why Don't We Daya
11 Alessia Cara Jaden Smith Noah Cyrus CNCO Why Don't We
12 Becky G Lil Yachty Daya Chief Keef Noah Cyrus
13 Zendaya Sabrina Carpenter Alan Walker Grace VanderWaal NCT Dream
14 Austin Mahone Zara Larsson Becky G PrettyMuch Sabrina Carpenter
15 Jack and Jack Austin Mahone Jake Paul Whethan King Princess
16 Luis Coronel Kodak Black Why Don't We Mason Ramsey PrettyMuch
17 Silento Kungs Zara Larsson Christian Nodal Grace VanderWaal
18 SEVENTEEN CNCO TWICE Willow
19 Echosmith Chloe x Halle PrettyMuch Madison Beer Manuel Turizo
20 Kehlani Lennon & Maisy Chloe x Halle NCT Dream Snail Mail
21 Shamir Grace VanderWaal Sabrina Carpenter Snail Mail Paloma Mami
Place 2020[12] 2021[13] 2022[14] 2023[15]
1 24kGoldn The Kid Laroi Olivia Rodrigo Ángela Aguilar
2 beabadoobee Billie Eilish BoyWithUke Ayra Starr
3 Billie Eilish 24kGoldn Eslabon Armado Chloe Moriondo
4 BENEE Pinkpantheress Lil Tecca D4vd
5 Carlie Hanson Willow Ángela Aguilar DannyLux
6 Chloe x Halle Olivia Rodrigo The Kid LAROI Flo
7 Gabby Barrett NLE Choppa Callista Clark GAYLE
8 jxdn Lil Huddy Billie Eilish Iván Cornejo
9 The Kid Laroi The Linda Lindas 347aidan Kidd G
10 Koffee Eslabon Armado Tiago PZK The Kid LAROI
11 Lil Mosey Lil Tjay Lauren Spencer-Smith
12 Lil Tecca Griff NLE Choppa Lil Tecca
13 Lil Tjay jxdn Moore Kismet The Linda Lindas
14 Lunay Callista Clark Tate McRae Luh Tyler
15 Manuel Turizo Nessa Barrett GAYLE Nessa Barrett
16 Mason Ramsey Baby Keem Kidd G NLE Choppa
17 Moore Kismet Joshua Bassett DannyLux Olivia Rodrigo
18 Natanael Cano Moore Kismet The Linda Lindas Riovaz
19 NCT Dream Grace VanderWaal Yahritza y Su Esencia Stephen Sanchez
20 NLE Choppa Luis Vazquez Lamorn Tate McRae
21 Noah Cyrus Tate McRae Chloe Moriondo Yunè Pinku

Musicians with multiple wins edit