| The Bold and the Beautiful | 2025 | Actress | Heidi Montag |
| Senior Year: Love Never Fails | 2023 | Actress | Dean |
| Black Easter | 2021 | Actress | Diane |
| Taylor XO, GIGI Gorgeous, Tiffany Ney, Paris Hilton, Sam Garfield: Do You Like to Party? Video | 2021 | Actress | Heidi |
| Assassin 33 A.D. | 2020 | Actress | Diane |
| Hashtaggers | 2016 | Actress | Heidi Montag |
| Heidi Montag: Overdosin' Music Video | 2012 | Actress | Heidi Montag |
| Just Go with It | 2011 | Actress | Adon's Wife |
| Heidi Montag: Blackout Music Video | 2010 | Actress | Heidi Montag |
| Spencer Pratt: I'm a Celebrity, Get Me Out of Here Short | 2009 | Actress | Wife |
| How I Met Your Mother | 2009 | Actress | Heidi Montag |
| Heidi Montag: Higher Music Video | 2008 | Actress | Heidi Montag |
| The Bold and the Beautiful | 2025 | Soundtrack | performer: "My Parade", "Look How I'm Doin'" |
| The Hills: New Beginnings | 2019 | Soundtrack | performer: "Glitter and Glory" |
| Miss Universe Pageant | 2009 | Soundtrack | performer: "Body Language" |
| Video on Trial | 2008 | Soundtrack | performer: "Higher" |
| Entertainment Tonight | 2008–2025 | Self | Self |
| The Masked Singer | 2024 | Self | Self - Clue Giver (as Heidi Pratt) |
| The Hills: New Beginnings | 2019–2021 | Self | Self (as Heidi) |
| Good Morning America | 2021 | Self | Self - Guest |
| The Spiritual World of Hummingbirds with Spencer Pratt Short | 2020 | Self | Self |
| Celebrity Family Feud | 2020 | Self | Self - Contestant |
| Very Cavallari | 2020 | Self | Self (as Heidi Pratt) |
| Today | 2015–2019 | Self | Self - Guest |
| Hollywood Medium | 2019 | Self | Self |
| The Cast of The Hills: New Beginnings Goes Head-to-Head in OG Hills Trivia Short | 2019 | Self | Self |
| Daily Pop | 2017 | Self | Self - Guest |
| What Happens at the Abbey | 2017 | Self | Self |
| Celebrity Big Brother | 2013–2017 | Self | Self - Contestant |
| The Doctors | 2016 | Self | Self |
| The Mother/Daughter Experiment: Celebrity Edition | 2016 | Self | Self |
| The Insider | 2016 | Self | Self |
| Access Daily | 2016 | Self | Self |
| Big Brother's Bit on the Side | 2013–2015 | Self | Self - Contestant |
| Reality Television Awards | 2015 | Self | |
| Marriage Boot Camp: Reality Stars | 2015 | Self | Self |
| The Real | 2015 | Self | Self |
| Extra | 2014 | Self | Self (as Heidi Pratt) |
| Celebrity Wife Swap | 2014 | Self | Self |
| Bethenny | 2014 | Self | Self - Guest |
| The View | 2008–2014 | Self | Self |
| After Shock: Heidi & Spencer TV Special | 2013 | Self | Self |
| Speidi: Scandal, Secrets & Surgery! TV Movie | 2013 | Self | Self |
| Loose Women | 2013 | Self | Self |
| The Wright Stuff | 2013 | Self | Self - Guest Panelist |
| Famous Food | 2011 | Self | Self - Contestant |
| Lopez Tonight | 2010–2011 | Self | Self - Guest |
| The Hills | 2006–2010 | Self | Self |
| The Tonight Show with Jay Leno | 2009–2010 | Self | Self |
| Heidi Montag Says No to Plastic | 2010 | Self | Self |
| Live from Studio Five | 2010 | Self | Self |
| The Tyra Banks Show | 2009 | Self | Self (as Heidi Pratt) |
| Jimmy Kimmel Live! | 2008–2009 | Self | Self |
| The Tonight Show with Conan O'Brien | 2009 | Self | Self - Guest |
| Access Hollywood | 2009 | Self | Self |
| Miss Universe Pageant | 2009 | Self | Self - Guest Performer |
| I'm a Celebrity, Get Me Out of Here! | 2009 | Self | Self |
| Late Night with Jimmy Fallon | 2009 | Self | Self (as Heidi Pratt) |
| Dogg After Dark | 2009 | Self | Self |
| 2008 MTV Video Music Awards | 2008 | Self | Self - Presenter |
| Drama in the Hills: US Weekly Presents the Top 10 Most Memorable Moments Ever | 2008 | Self | Self |
| Late Show with David Letterman | 2008 | Self | Self - Talking with Dave in Green Room |
| 2008 MTV Movie Awards | 2008 | Self | Self |
| The Ellen DeGeneres Show | 2008 | Self | Self |
| Live with Kelly and Mark | 2008 | Self | Self |
| What Perez Sez | 2008 | Self | Self |
| 2007 MTV Video Music Awards | 2007 | Self | Self |
| 2006 MTV Movie Awards | 2006 | Self | Self - Audience Member |
| Laguna Beach: The Real Orange County | 2005 | Self | Self - LC's Friend |
| Entertainment Tonight | 2016–2025 | Archive Footage | Self (archive footage) |
| Access Hollywood | 2025 | Archive Footage | Self (archive footage) |
| The Project | 2025 | Archive Footage | Self - Reality TV Star (archive footage) |
| Dish Nation | 2022–2023 | Archive Footage | Self (archive footage) |
| Top 10 Beyond the Screen | 2020 | Archive Footage | Self (archive footage) |
| The Hills: New Beginnings | 2019 | Archive Footage | Self (archive footage, as Heidi) |
| Celebrity Page | 2017 | Archive Footage | Self (archive footage) |
| Bethenny | 2014 | Archive Footage | Self - Guest (archive footage) |
| The Bling Ring | 2013 | Archive Footage | Self (archive footage, uncredited) |
| The Wright Stuff | 2013 | Archive Footage | Self (archive footage) |
| The Tonight Show with Jay Leno | 2010 | Archive Footage | Self (archive footage) |
| Weekend Sunrise | 2010 | Archive Footage | Self (archive footage) |
| The Hills | 2007–2010 | Archive Footage | Self (archive footage) |
| The Tonight Show with Conan O'Brien | 2009 | Archive Footage | Self (archive footage) |
| I'm a Celebrity, Get Me Out of Here! | 2009 | Archive Footage | Self (archive footage, as Heidi Pratt) |