






Xếp hạng theo doanh thu phòng vé Việt Nam (Box Office Vietnam).
| 2027 | Quỷ Ám: Tử Đạo | — |
| 2025 | This Too Shall Pass | Rockford |
| Fuck My Son! | Vermina | |
| The Threesome | Paul | |
| The Twin | Dr. Beaumont | |
| 2024 | The Becomers | Radio Host |
| 2023 | The Civil Dead | Arnold |
| 2022 | Wild Card | The Ex-Boyfriend |
| 2021 | Sát Nhân Halloween | Lonnie Elam |
| Băng Đảng Báo Đen | Leslie Carlyle | |
| 2020 | The Immortal Jellyfish | Captain Stone |
| Ravage | Ravener | |
| A Dim Valley | Dr. Clarence Rumble | |
| Subject 19 | — | |
| 2019 | Back Roads | Uncle Mike |
| Ký Ức Kinh Hoàng | Barry the Chunk | |
| Sword of Trust | Truther | |
| 2018 | Aquaman: Đế Vương Atlantis | Professor James |
| Jules of Light and Dark | Freddy | |
| The Old Man & the Gun | Stephen Beckley, Jr., Esq. | |
| Good Luck in the Land of Mañana | Voiceover | |
| Xin Lỗi Đã Làm Phiền | Anderson | |
| Ghostbox Cowboy | Bob | |
| End Times | Robert | |
| Poor Jane | Robert | |
| Mohawk | Major Sherwood Beal | |
| 2017 | Dismissed | Paul Garrett |
| LaZercism | Eric Casebolt | |
| Dr. Brinks & Dr. Brinks | Bill Tully | |
| Tôi thấy thật lạc lõng trong thế giới này | Chris Rumack | |
| 2016 | Always Shine | Producer #1 (uncredited) |
| Uncle Kent 2 | Hotel Clerk | |
| Uncle Kent 2 | Front Desk Robbie | |
| Show Yourself | Jerry | |
| Rainbow Time | Jake's Dad | |
| Slash | Blake | |
| 2015 | Newcomer | Douglas |
| Lamb | Fishing Show Narrator (voice) | |
| The Missing Girl | Mort Colvins | |
| 2014 | White Creek | Teddy Bear |
| Ping Pong Summer | Uncle Jim | |
| The Heroes Of Arvine Place | — | |
| Sabbatical | Ben Hardin | |
| Tín Hiệu Kích Động | James | |
| She's Lost Control | C.T. | |
| Thou Wast Mild and Lovely | Jeremiah | |
| 2013 | Bob Birdnow's Remarkable Tale of Human Survival and the Transcendence of Self | Jerry |
| HÁ PHẢI THÁNH NHÂN | Cowboy Hat | |
| This Is Martin Bonner | Steve Helms | |
| Congratulations! | Mr. Gray | |
| Detonator | Dutch | |
| 2012 | Atonal | Jesse |
| Nature Calls | Drew Pritchard | |
| 2011 | The Catechism Cataclysm | Robbie Shoemaker |
| Nơi Trú Ẩn | Jim | |
| Septien | Ezra Rawlings | |
| Cork's Cattlebaron | Brady | |
| The Oregonian | Herb | |
| 2008 | Ngọn Dứa Thần Tốc | Dr. Terrence |
| 2007 | Low and Behold | E.D. 'Stully' Stull |
| Great World of Sound | Layton | |
| 2005 | The Pigs | Paul Griffin |
| 2004 | Dòng Nước Ngầm | Bern |
| 2002 | Divine Secrets of the Ya-Ya Sisterhood | Pilot |
| 2001 | Ding-A-Ling-Less | Alan |
| 1998 | The Week That Girl Died | Jimmy |
| 1994 | Getting In | Man in Library |
| 2011 | Meanwhile | Co-Producer |
| 1998 | The Week That Girl Died | Editor |
| The Week That Girl Died | Executive Producer |
Theo dữ liệu phòng vé Việt Nam (Box Office Vietnam), Robert Longstreet có 1 phim với tổng doanh thu 11.43 tỷ.
Phim doanh thu cao nhất là "Ký Ức Kinh Hoàng" (2019) với 11.43 tỷ tại phòng vé Việt Nam.
Robert Longstreet là diễn viên, sinh tại USA.