Mason McNulty Filmography
| 2024 | Deadly Fiancée · as Sam |
| 2024 | After Them (TV Series) · as Andreas |
| 2024 | Gacy: Serial Killer Next Door · as Bobby |
| 2021 | Catch the Bullet · as Chad |
| 2020 | Danger Force (TV Series) · as Bling King #3 |
| 2019 | VHYes · as Ralph |
| 2019 | 12 Pups of Christmas · as Young Martin |
| 2019 | Assimilate · as Joey Shepard |
| 2019 | Schooled (TV Series) · as Toby Murphy |
| 2019 | PEN15 (TV Series) · as Joe Field |
| 2016 | Lethal Weapon (TV Series) · as 10 Year Old Boy |
| 2016 | Criminal Minds: Beyond Borders (TV Series) · as Nicholas Moore |
| 2014 | Sequestered (TV Series) · as Nicholas |
| 2013 | Instant Mom (TV Series) · as Billy |
| 2013 | Despicable Me 2 · as Additional Voices (voice) |
| 2011 | Teen Wolf (TV Series) · as Caleb |
| 2010 | Melissa & Joey (TV Series) · as Daniel |
| 2009 | Modern Family (TV Series) · as Connor |
| 2009 | NCIS: Los Angeles (TV Series) · as Boy |
| 2009 | Glee (TV Series) · as Young Sam |
| 1997 | South Park (TV Series) · as Toothbrush |
| 1965 | Days of our Lives (TV Series) · as Nicole's Son |
| 2024 | Gacy: Serial Killer Next Door · as Executive Producer |
| 2018 | The 39th Annual Young Artist Awards · as Self - Nominee & Presenter |