 | Lana Condor als Lara Jean Song Covey |
 | Noah Centineo als Peter Kavinsky |
 | Janel Parrish als Margot Song Covey |
 | Anna Cathcart als Katherine "Kitty" Song Covey |
 | Ross Butler als Trevor Pike |
 | Madeleine Arthur als Christine |
 | Emilija Baranac als Genevieve |
 | Trezzo Mahoro als Lucas James |
 | Sarayu Blue als Trina Rothschild |
 | John Corbett als Daniel Covey |
 | Henry Thomas als Mr. Kavinsky |
 | Sofia Black-D'Elia als Heather |
 | June B. Wilde als Joan |
 | Kelcey Mawema als Emily |
 | Jeon Ho-young als Dae |
 | C. Ernst Harth als Adler Principal |
 | Ese Atawo als Ms. Beckman (Chaperone) |
 | Rhianna Jagpal als Dipti Shaw |
 | Michael Delleva als Daniel |
 | Molly Grace als Mollie |
 | Momona Tamada als Young Lara Jean |
 | Rian McCririck als Young Peter |
| Jenny Han als Principal Cho |
 | Linda Ko als Aunt Carrie |
| James Li als Uncle Victor |
 | Julie Tao als Haven |
| Vonnie Bennetto als Officiant |
 | Joey Pacheco als Owen |
 | Jara Zeimer als OMG Girl |
 | Anisha Cheema als Valentine's Girlfriend |
 | Susie Lee als Eve Song Covey |
 | Rish Shah als Ravi |
 | Nathan Parrott als Kavinsky Boy #1 |
 | Kayla Deorksen als Angela (Wedding Planner) |
 | Jerry Yang als Nathan |
 | Lisa Durupt als Mr. Kavinsky's Wife |
 | Kalyn Miles als Real Estate Agent |
 | Sarah Formosa als Prom-Posal Dancer #2 |
 | Mariesa Crouse als Prom-Posal Dancer #3 |
 | Danielle Brokopp als Prom-Posal Dancer #4 |
 | Janelle McDermoth als Nisha |
 | Katie Do als Ani |
| Addison Sartino als Singer |
| Brandon Yangmi als Bandmate #1 |
| Austin Fraser als Bandmate #2 |
| Pierce Turcotte als Bandmate #3 |
| Dan Cipriano als Saxophonist |
| Eun-Mi Jeon als Food Vendor - Seoul |
 | Song Hoon als Korean Man - Seoul |
| Kevin 'Woo-Young' Seon als Doorman #1 - Seoul |
 | Ahn Jae-Jun als Doorman #2 - Seoul |
| Eun-Seok Lee als Doorman #3 - Seoul |
 | Gina Jun als NYU College Student |
| Jenny Han | Novel |
| Michael Fimognari | Director |
| Katie Lovejoy | Writer |
| Michael Fimognari | Director of Photography |
| Aubrey Bendix | Co-Producer |
| Don Dunn | Executive Producer |
| Galen Fletcher | Line Producer |
| Chris Foss | Producer |
| Megan Greydanus | Co-Producer |
| Jenny Han | Executive Producer |
| Kelsey Jackson | Co-Producer |
| Matt Kaplan | Producer |
| Max Siemers | Executive Producer |
| Michelle Harrison | Editor |
| Joe Klotz | Editor |
| Tamara Meem | Editor |
| Tiffany Mak | Casting |
| Tamara Notcutt | Casting |
| Chris August | Production Design |
| Catherine Ircha | Art Direction |
| Lorraine Carson | Costume Design |
| Chris Foss | Line Producer |
| Lindsay Wolfington | Music Supervisor |
| Laura Webb | Music Supervisor |
| Robyn Marshall | Executive Producer |
| Michael Fimognari | Executive Producer |
| Rebecca Glashow | Executive Producer |
| Shelley Zimmerman | Executive Producer |
| Scott Levine | Executive Producer |
| Susan Johnson | Executive Producer |
| Tracey Nomura | Unit Production Manager |
| Galen Fletcher | Unit Production Manager |
| Nicolas Harvard | First Assistant Director |
| Daniel Redenbach | First Assistant Director |
| Jodi Stecyk | Stunt Coordinator |
| Louise Hradsky | Choreographer |
| Jennifer Li | Stunts |
| Marc Caloren | Set Designer |
| Meghan Collins | Art Department Coordinator |
| Renée Read | Set Decoration |
| Michael Jovanovski | Set Decoration |
| Richard Beech | Set Decoration |
| Donna Smith | Property Master |
| Ashley Mendoza | Assistant Property Master |
| Jen Oberem | Script Supervisor |
| Craig Stauffer | Production Sound Mixer |
| Meg Schmon | Costume Supervisor |
| Lux Petrova | Assistant Costume Designer |
| Michele Lee | Production Accountant |
| Rob Maier | Construction Coordinator |
| Darren Marcoux | Special Effects Coordinator |
| John O'Toole | Transportation Coordinator |
| Scott Delaplace | Transportation Captain |
| Julia Frittaion | Unit Publicist |
| Katie Yu | Still Photographer |
| Sara Brown | Extras Casting |
| Heather McGowan | Casting Assistant |
| Mikael Sandgren | Music Editor |
| May Rogers | Music Coordinator |
| Rachel Thorpe | Music Coordinator |
| Lewis Goldstein | Sound Re-Recording Mixer |
| Lewis Goldstein | Supervising Sound Editor |
| Gina Alfano | Dialogue Editor |
| Gina Alfano | ADR Editor |
| Mariusz Glabinski | Sound Effects Editor |
| Wen Hsuan Tseng | Foley Mixer |
| Shaun Brennan | Foley Artist |
| Mari Matsuo | Assistant Sound Editor |
| Jerrell Suelto | ADR Mixer |
| Vinny Alfano | ADR Mixer |
| Alana Coddaire | Visual Effects Producer |
| Anthony Kramer | Visual Effects Supervisor |
| Timothy Montoya | Visual Effects |
| Marlon Hero | Second Assistant Director |
| Joe Wong | Original Music Composer |
| Cho Sang-won | Electrician |
| Hwang Seon-kwon | Line Producer |
| Lee Nam-gwon | Key Grip |
| Park Se-ra | Costume Supervisor |
| Su Kim | Casting Director |
