Summerset Isle features a cast of 98 voice actors.
- t0nkatsu/Liam Bolwing, Human Male Polite, Male Common, Edgar Mannick, Male Dremora Type 1, Bandit Watchman, Lillandril Docks Worker.
- Jamie Campbell Male Khajiit Summerset Type 1
- Matthew Wade (aka Lomekian) Drusil, Kalaril, Riminil
- Robyn Rybnik, Quillinda, Andratha, Female Khajiit New, Female Common, Female Old Bored, Red Beggar.
- Nick Poling Galthradoth, Gainlin
- Jake Bowen Male Dunmer Type 1
- Tartan Kiwi Male British, Male Orc New, Golin the Ready, Hecerinde, Huendrylis
- Krys Janae Sylwia.
- Jessica N. Osborne Female British, Head Chancellor Eldawynn
- Laura Moore Female Altmer, Lillandril Docks Worker
- InsomniaticVA Female Human, Lillandril Docks Worker
- MeekVoice Male Wise
- Eric Umstott/GentlemanT-rex Male Elf Condescending, Helvar the Drunk
- Craftiian Male Mature
- Paul Warren Male Dunmer Type 2
- Joel Hewitt Male Orc Nice, Male Orc Rude, Lillandril Docks Worker
- Tom Resnick Male Khajiit 2, Male Argonian (v1.5)
- Alex Cain Male Smooth
- chevronrock Jim Jim, Male Dremora Type 2, Jemane
- Jorge Gonzalez http://jorgesvoiceovers.com/ Male Argonian Type 1
- Grim Boozed The Lizard King (v1.5)
- Aurore Gautheur Female Altmer, Female Bosmer (v1.5)
- Peter Young Male Altmer, Male Bosmer (v1.5)
- Kagilo Male Imperial (v1.5)
- Bear Horsburgh Male Orc Proper, Male Altmer Proper(v1.5)
- Moraiya Pourfarid Female Altmer (v1.5)
- Corgi Booty Female Human (v1.5)
- Charlie Ho (aka iceytonez) Male Altmer (v1.5)
- Knight0mega Female Altmer (v1.5)
- Luke Hall Male Altmer (v1.5)
- Alice Hinton-Jones Female Altmer (v1.5)
- The Invisible Davis Male Elf Elder, Male Elf Rude (v1.5)
- Emily Menard Female Elf Excited, Female Khajiit (v1.5)
- Isabella Jansen Female Human (v1.5)
- Eileen Anglin Female Altmer (v1.5)
- Martin Wain Male Elf (v1.5)
- Kyle Freeman Male Elf (v1.5)
- Rose Copper Female Elf (v1.5)
- Paul Anderson Male Elf (v1.5)
- Yon Shady Glenn Male Khajiit (v1.5)
- UniTea-VA Female Elf (v1.5)
- GoliathVoices Unique Male Finoing (v1.5)
- Jack CC Urbanski Male
- Jarret Clarke - Male Khajiit (v1.5)
- Sara Dunham Female Dunmer, Female Elf (v1.5)
- Plummet Sound Female Human (v1.5)
- Mindaelven Male Elf (v1.5)
- Stephanie "Violita" Davenport Female Human (v1.5)
- Angelique Lazarus Female Redguard (v1.5)
- Lawrence Trotti Male Elf (v1.5)
- Will Adams Male Students 01 (v1.5)
- talkingNsuch Male Elf (v1.5)
- RealAmanda Female Elf (v1.5)
- Jameen Fitzgerald - Unique Female Old
- Shannon C Female Elf (v1.5)
- John Henry Kurtz Male Human (v1.5)
- Magiseth Male Elf (v1.5)
- pepperonpages Female Elf (v1.5)
- Nymera Female Elf (v1.5)
- Toby "Frogface" Rock Male Elf (v1.5)
- Razi the Red Male Dunmer (v1.5)
- Johnathan Zumwalt Male Students (v1.5)
- Kolton O'Brien Male Elf (v1.5)
- VoiceLab Male Elf (v1.5)
- Dom Simmons Male Student Unique (v1.5)
- Jay33721 Male Elf (v1.5)
- Placeholder Female students (v1.5)
- Pete Estenik Male Elf (v1.5)
- Azule Raheem Male Elf, Male Argonian, Male Human (v1.5)
- Kelly Brown Female Students (v1.5)
- RaccoonBro Male Dominion (v1.5)
- Ethan Nghe Male Dominion, Male Khajiit (v1.5)
- Charlotte Vaughan (CharlezVA) Female Khajiit, Female Elf (v1.5)
- Elizabeth Plant Female Elf (v1.5)
- Anthony W Male Lillandril Guard (v1.5)
- Stephen McLean Male Elf (v1.5)
- SunshineDaisy Female Nord (v1.5)
- Ryan Ivy (GoblinArcanist) Male Orc (v1.5)
- Charlet Female Student (v1.5)
- Ellen Daniels Female Guard (v1.5)
- Meghan T Female Dominion (v1.5)
- yourenotsupposedtobeinhere Male Bosmer (v1.5)
- Uncredited Actor Dead Voices (v1.5)
- Abigail Wahl Female Orc Companion @wardenwahl (v1.5)
- Bryce Denton Angry Old Guy (v1.5)
- Alexxandra Macedo Female Orc, Female Student (v1.5)
- Joshua Spector Male Elf (v1.5)
- Thea Solone Female Orc (v1.5)
- Silly Serpent Female Elf (v1.5)
- Abbey Ortiz Female Elf (v1.5)
- Grason Crabtree Male Bandit (v1.5)
- RyanXpml Male Vampire (v1.5)
- Vivian Reed Female Bandit (v1.5)
- Luke Hynes Male Vampire (v1.5)
- Arturo Garibay Male Bandit (v1.5)
- Jett Barker Female Vampire (v1.5)
- Eduardo Riedel Male Altmer (v1.5)