A list of actors and actresses who have appeared in The Loud House universe.
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A-C
- Pamela Adlon: Tabby
- Carlos Alazraqui: Sergio/Carlos/Vito/Waiter/Ad Voice/Band Leader/Bus Driver/Conductor/Customer/Ed Falcon/Giovanni/GravyBot/Various
- Curtis Armstrong: Mr. Gurdle
- Sean Astin: Loni Loud
- Diedrich Bader: Muscle Fish
- Jonathan Banks: Coach Crawford
- Cooper Barnes: Stan Stankco
- Dee Bradley Baker: Charles/Cliff/Rocket/Airport Security/Cleopawtra/Dog Show Judge/Lalo/Male Vocalist/Various
- Christine Baranski: Joyce Crandall
- Eric Bauza: Bruno/Cory/Rex/Boy #2/Card Shark/Hipster Man/Kitty's Trainer/Male Checkout Employee/Male Couple/Male judge/Male Mercado Customer/Various
- Stephanie Beatriz: Blanca/La Tormenta
- Jeff Bennett: Mick Swagger/Coach Pacowski/Mr. Reinforced Titanium Alloy Arms/Norm/Announcer/Automated Lie/Announcer/Various
- Jodi Benson: Tammy Gobblesworth
- Anjali Bhimani: Jesse Hiller/Gas Station Patron #2/Waitress/Woman
- Billy Boyd: Scott/Fisherman/Various
- Wayne Brady: Harold McBride
- Kimberly Brooks: Cricket/Assistant/Female on Beach/Various
- Yvette Nicole Brown: Mayor Davis/Townsperson
- Ashly Burch: Lainey
- Eugene Byrd: Roger
- Veronica Cartwright: Sue
- Greg Cipes: Luke Loud
- Jennifer Coolidge: Myrtle
- Jesse Corti: Ziggy
C-L
- Trevor Devall: Carnival Manager/Worker/Driver/Mr. Budden/Various
- Loretta Devine: Nana Gayle
- Jessica DiCicco: Lynn Loud/Lucy Loud/Zach/Crowd Member/Girl/Karate Girl/Rachel/Student/Various
- John DiMaggio: Flip/Mr. Grouse/Chunk/Tyler/Announcer/Patchy Drizzle/Edwin/Pep/Security Guard/Various
- Juliet Donenfeld: Claire
- Maile Flanagan: Byron/Eighth Grader/Amy/Morgan
- Ruben Garfias: Hector/Male Couple/Male Zombie #1/TV Announcer/Villain
- Brian George: Dr. Simmons
- Sean Giambrone: Benny/Mrs. Appleblossom
- Ben Giroux: Jack in the Box/Small Boy/Male Counselor/Commercial Announcer/Trevor/Mechanical Voice/Teen Boy/Giovanni Changs Host
- Jake Green: Brad/Cruise Patron Man #2/Man in Hot Tub
- Seth Green: Loki Loud
- Grey Griffin: Lola Loud/Lana Loud/Lily Loud/Scoots/Cheryl/Meryl/Mrs. Bernardo/Mrs. Gurdle/Coach Keck/Various
- Jack Griffo: Blake Bradley/Tristan/Ro-Bro
- Harvey Guillén: Henrique
- Jess Harnell: Bass Player/Billy's Dad/Pucker Uppenheimer/Sean
- Melissa Joan Hart: Mrs. Chang
- Tony Hawk: Himself
- Ken Jeong: Mr. Chang
- Daniel Dae Kim: Mr. Hong
- Clyde Kusatsu: Mr. Yanaga
- Phil LaMarr: Kotaro/Bus Driver/Camera Guy/Male Classmate/Matthew/Mr. Scully/Orderly/Principal/Reg/Steve/The Sale Clerk
- Phill Lewis: Mr. Rickshaw
- Eric Lopez: Pablo
- George Lopez: Ernesto Estrella
- Jane Lynch: Coach Hutch
M-T
- Vanessa Marshall: Tina/Waitress
- Michael McDonald: Howard McBride/TV Announcer/Antonio/Appraiser/Boy #2/Harold
- Lara Jill Miller: Lisa Loud/Liam Loud/Persephone/Patti/Artie/Ashley/Beatrice/Billy/Various
- Bill Mumy: Timothy McCole
- Liliana Mumy: Leni Loud/Blair/Brenda/Club Kids/Crying Baby/Green Dress Model/Kids/Leni's Double/Preschooler #2/Twin Sister #1/Young Leni
- Marisol Nichols: Principal Ramirez
- Joe Nieves: Chase Sr.
- Daran Norris: Coach Niblick/Automated Voice/Baseball Announcer/Bert/Cafeteria Student/Various
- April Ortiz: Pina/The Tropical Fruits
- Rob Paulsen: Seymour/Food Delivery App/Lane Loud/Male Nurse/Mrs. Coconuts/Pop-Pop's Suit/Senior/TV Announcer/Valet
- Khary Payton: Harold/Various
- Alan Ruck: Cop/Tetherby
- Joshua Rush: Quarterback/Classmate #1
- Charlie Schlatter: Commercial Announcer/Computer/DJ/Dad #1/Dr. Feinstein/Various
- James Sie: Barista Guy/Senior Male Hat Customer/Waiter Guy
- Aryan Simhadri: Sameer
- Kath Soucie: Club Manager/Mrs. Vaporciyan
- Brian Stepanek: Lynn Loud Sr./Todd/Hunter Spector/Announcer/Delivery Man/Various
- Mindy Sterling: Dr. Shuttleworth/Various
- Alyson Stoner: Sam/Booth Kid/Caitlin/Roxy/Toy Store Toddler
- Kim Strauss: Food Critic/Trailer Narrator/Various
- Tara Strong: Maddie/Coaster Ride/Kai/Rink Owner/TV Announcer
- Cree Summer: Paula/Singer/Animatronic/Boy/Cheerleader #1/Crikey/Various
- Catherine Taber: Lori Loud/Katherine Mulligan/Girl Jordan/Director/Reporter/Various
- Jill Talley: Rita Loud/Claudette/Dinky/Griselda/Punk Girl/Abigail/Various
- Kapil Talwalkar: Raj/Spa Caddy
- Fred Tatasciore: Bernie/Big Biker/Biker Man #1/Bingo Caller/Col. Crackers/Various
- James Arnold Taylor: Mr. Bolhofner/Bertrand/Guy Grazer/Man/Anderson/Burpin' Burger Man/Canadian Boy/Various
- David Tennant: Angus
- Stephen Tobolowsky: Principal Huggins/Florist/Walter Phillipini
- Lauren Tom: Cici/Burpin' Burger Mom/Ms. Pham
- Danny Trejo: Danny
V-Z
- Tru Valentino: Fish Shoppe Owner/Various
- Janet Varney: Automated Voice/Dr. Linnaeus
- Alexa Vega: Carlota Casagrande/Chinah/Spa Attendant/Yellow Dress Model
- Brian Patrick Wade: Rip Hardcore
- Kari Wahlgren: Ms. Carmichael/Automated Voice/Captain/Cashier/Director/Disembowler/Edna/Various
- Audrey Wasilewski: Nacho/Geo/Blond Woman/Girl Duck/Mourning Dove/Roxanne
- Fred Willard: Pop-Pop
- Barry Williams: Bumper Sr.
- Gary Anthony Williams: The Manager
- Debra Wilson: Dean Dupont/Various
- Charlyne Yi: Cici
- Luke Youngblood: Theo/Tween #2/Tween #4
