| Year | Title | Role | Notes |
| 2009 | The Battery's Down | Bat Mitzvah Riffer | Episode: "Bad Bad News" |
| 2010–2013 | Victorious | Cat Valentine | Main role (56 episodes) |
| 2011 | iCarly | Cat Valentine | Episode: "iParty with Victorious" |
| 2011–2013 | Winx Club | Princess Diaspro (voice) | Recurring role (specials, seasons 3 & 5) |
| 2013 | Swindle | Amanda Benson | Television film |
| 2013–2014 | Sam & Cat | Cat Valentine | Co-lead role (35 episodes) |
| 2014 | Family Guy | Italian Daughter (voice) | Episode: "Mom's the Word" |
| 2014 | Saturday Night Live | Herself/musical guest | Episode: "Chris Pratt/Ariana Grande" |
| 2015 | RuPaul's Drag Race | Herself/guest judge | Episode: "Ru Hollywood Stories" |
| 2015 | Knock Knock Live | Herself | Unaired episode |
| 2015 | Scream Queens | Sonya Herfmann / Chanel#2 | Recurring role; 4 episodes |
| 2016 | Saturday Night Live | Host and musical guest | Episode: "Ariana Grande" |
| 2016 | The Voice | Performer – Duet with Christina Aguilera | Air date: May 26, 2016 (Season 10 finale) |
| 2016 | Hairspray Live! | Penny Pingleton | Special |
| 2016 | The Voice | Performer – Duet with Stevie Wonder | Air date: December 13, 2016 (Season 11 finale) |
| 2017 | One Love Manchester | Organizer and performer | Special |
| 2017 | Carpool Karaoke: The Series | Herself | Episode: "Seth MacFarlane & Ariana Grande" |
| 2018 | A Very Wicked Halloween | Herself | Special |
| 2018 | Ariana Grande at the BBC | Herself | Special |
| 2018 | Ariana Grande: Dangerous Woman Diaries | Herself | YouTube Docuseries |