 | Daniel Day-Lewis als Daniel Plainview |
 | Paul Dano als Paul Sunday / Eli Sunday |
 | Kevin J. O'Connor als Henry |
 | Ciarán Hinds als Fletcher Hamilton |
 | Dillon Freasier als H.W. Plainview |
 | Hope Elizabeth Reeves als Elizabeth |
 | Colleen Foy als Mary Sunday |
 | Barry Del Sherman als H. B. Ailman |
 | David Willis als Abel Sunday |
 | Hans Howes als Mr. Bandy |
| Sydney McCallister als Mary Sunday (young) |
 | Paul F. Tompkins als Prescott |
 | Kevin Breznahan als Signal Hill Man |
 | Jim Meskimen als Signal Hill Married Man |
 | Erica Sullivan als Signal Hill Woman |
 | Randall Carver als Mr. Bankside |
 | Coco Leigh als Mrs. Bankside |
 | James Downey als Al Rose |
 | David Warshofsky als H.M. Tilford |
| Charles Thomas Doyle als J.J. Carter |
 | Russell Harvard als Adult H.W. Plainview |
| Martin Stringer als Silver Assay Worker |
| Matthew Braden Stringer als Silver Assay Worker |
| Jacob Stringer als Silver Assay Worker |
| Joseph Mussey als Silver Assay Worker |
| Harrison Taylor als Baby H.W. |
| Stockton Taylor als Baby H.W. |
| Christine Olejniczak als Mother Sunday |
| Kellie Hill als Ruth Sunday |
| Dan Swallow als Gene Blaize |
| Robert Arber als Charlie Wrightsman |
| Bob Bell als Geologist |
| David Williams als Ben Blaut |
| Joy Rawls als Eli Follower |
| Louise Gregg als Eli Follower |
| Amber Roberts als Eli Follower |
| John W. Watts als Oil Worker |
| Robert Caroline als Oil Worker |
| Barry Bruce als Oil Worker |
| Irene G. Hunter als Mrs. Hunter |
| John Chitwood als Little Boston Doctor |
| Colton Woodward als William Bandy |
| John Burton als L.P. Clair |
| Robert Barge als Bartender |
| Ronald Krut als Standard Oil Man |
| Huey Rhudy als Standard Oil Man |
| Steven Barr als Standard Oil Man |
| Robert Hills als H.W.'s Interpreter |
| Bob Bock als Priest |
| Vince Froio als Plainview Servant |
| Phil Shelly als Plainview Servant |
| Brad Carr als Signal Hill Man (uncredited) |
 | Mary Elizabeth Barrett als Fanny Clark (uncredited) |
| Rhonda Reeves als Elizabeth's Mother (uncredited) |
 | Beau Smith als Blacksmith (uncredited) |
| Paul Thomas Anderson | Screenplay |
| Upton Sinclair | Novel |
| Robert Elswit | Director of Photography |
| Dylan Tichenor | Editor |
| Jack Fisk | Production Design |
| JoAnne Sellar | Producer |
| Paul Thomas Anderson | Producer |
| Daniel Lupi | Producer |
| Paul Thomas Anderson | Director |
| Cassandra Kulukundis | Casting |
| Jonny Greenwood | Original Music Composer |
| Scott Rudin | Executive Producer |
| Eric Schlosser | Executive Producer |
| Erica Frauman | Post Production Supervisor |
| Jamey Pryde | Post Production Supervisor |
| Will Weiske | Production Supervisor |
| Mark Graziano | Thanks |
| Jose Ludlow | Thanks |
| Kenny Becker | Color Timer |
| Linda Cohen | Music Supervisor |
| Mark Bridges | Costume Design |
| Jim Erickson | Set Decoration |
| Linda D. Flowers | Hair Department Head |
| John Blake | Makeup Department Head |
| Anna Rane | Script Supervisor |
| Eden Clark Coblenz | Costume Supervisor |
| Mark Manthey | Rigging Gaffer |
| Melinda Sue Gordon | Still Photographer |
| François Duhamel | Still Photographer |
| Jeff Habberstad | Stunt Coordinator |
| Myke Schwartz | Stunt Coordinator |
| Paul Rabjohns | Music Editor |
| David Crank | Art Direction |
| Brian Avery | Stunts |
| Adam Somner | Assistant Director |
| Eric Richard Lasko | Assistant Director |
| Robby Baumgartner | Lighting Technician |
| Matthew Wood | Supervising Sound Editor |
| Chris Scarabosio | Sound Designer |
| Tom Johnson | Sound Re-Recording Mixer |
| Michael Semanick | Sound Re-Recording Mixer |
| Dan Perri | Title Designer |
| Catherine Conrad | Makeup Artist |
| J.R. Grubbs | Sound Effects Editor |
| Tim Nielsen | Sound Effects Editor |
| Jeff Sawyer | Sound Effects Editor |
| Grady Cofer | Visual Effects Supervisor |
| Christina Graff | Visual Effects Producer |
| Paul Graff | Visual Effects Supervisor |
| Susan Greenhow | Visual Effects Producer |
| Brad Blei | Set Dresser |
| Jack Colmenero | Set Dresser |
| Mark Hanks | Set Dresser |
| Carl J. Stensel | Set Designer |
| Joel Corry | Intern |
| Kimberly Adams | Assistant Costume Designer |
| Kathy Kiatta | Key Costumer |
| Michelle Elaine Teague | Costumer |
| Yvonne Wilburn | Costumer |
| Kim Ayers | Makeup Artist |
| Yeşim "Shimmy" Osman | Key Hair Stylist |
| Hugo Weng | Dialogue Editor |
| Bruce Tanis | Foley Editor |
| Randy Singer | Foley Mixer |
| David M. Roberts | Boom Operator |
| John Pritchett | Sound Mixer |
| Thomas J. O'Connell | ADR Mixer |
| Sarah Monat | Foley Artist |
| Vanessa Lapato | Dialogue Editor |
| David Horton Jr. | Foley Editor |
| Robin Harlan | Foley Artist |
| Coya Elliott | First Assistant Sound Editor |
| Rick Canelli | ADR Recordist |
| Andrew Bock | Sound Assistant |
| Ryan Happy | Stunts |
| Keii Johnston | Stunts |
| Shawn Patrick Lane | Stunts |
| Frank Lloyd | Stunts |
| Jake Lombard | Stunts |
| Mark Muñoz | Stunts |
| Denney Pierce | Stunts |
| Larry M. Shorts | Stunts |
| Paul Sklar | Stunts |
| Scott Sproule | Stunts |
| Adam Watkins | CG Supervisor |
| Steve Cremin | Special Effects Coordinator |
| Christian Eubank | Special Effects Technician |
| Jay King | Special Effects Technician |
| Brandon K. McLaughlin | Special Effects Technician |
| Douglas D. Ziegler | Special Effects Technician |
| Ian Stone | Second Assistant Director |
| Richard Oswald | Second Assistant Director |
| Arvo Pärt | Additional Soundtrack |
| Sharon Ray Ely | Hairstylist |
