| Awards | Year | Category | Work | Result | Ref. |
| Billboard Music Awards | 2015 | Top Billboard 200 Album | That's Christmas to Me | Nominated | [non-primary source needed] |
| Top Billboard 200 Artist | Pentatonix | Nominated | [non-primary source needed] |
| Daytime Emmy Awards | 2017 | Outstanding Musical Performance in a Daytime Program | "God Rest Ye Merry Gentlemen" on Rachael Ray | Nominated | |
| 2021 | Outstanding Original Song | "Cabana Boy Troy" on The Kelly Clarkson Show | Nominated | |
| Grammy Awards | 2015 | Best Arrangement, Instrumental or A Cappella | "Daft Punk" | Won | |
| 2016 | "Dance of the Sugar Plum Fairy" | Won | |
| 2017 | Best Country Duo/Group Performance | "Jolene" (ft. Dolly Parton) | Won | |
| 2023 | Best Traditional Pop Vocal Album | Evergreen | Nominated | |
| 2024 | Holidays Around the World | Nominated | |
| 2025 | Best Arrangement, Instrumental or A Cappella | "Rose Without the Thorns" | Nominated | |
| IHeartRadio Music Awards | 2016 | Best Cover Song | "Cheerleader" | Nominated | |
| Nickelodeon Kids' Choice Awards | 2016 | Favorite Music Group | Pentatonix | Nominated | |
| 2017 | Nominated | |
| Shorty Awards | 2015 | Best YouTube Musician | Won | |
| Sports Emmy Awards | 2023 | Outstanding Music Direction | Super Bowl LVII: "Ragged Old Flag: An American Chorus" | Won | |
| Streamy Awards | 2014 | Best Cover Song | "Daft Punk" | Won | |
| Best Original Song | "Love Again" | Nominated | |
| Best Musical Artist | Pentatonix | Nominated | |
| 2015 | Best Collaboration | Pentatonix and Lindsey Stirling | Nominated | |
| Best Cover Song | "Evolution of Michael Jackson" | Nominated | |
| YouTube Music Awards | 2013 | Response of the Year | "Radioactive" (with Lindsey Stirling) | Won | |
| 2015 | Artist of the Year | Pentatonix | Won | |
| Webby Awards | 2016 | Video Remixes/Mashups | Evolution of Michael Jackson | Nominated | |
| World Choreography Awards | 2017 | Best Choreography in a Music Video | Sweet Life | Won | |