- Blastwave FX, Toy, Train, Whistle, Blow, Double (Heard in "The Joke is on Thomas".)
- Duck Whistle
- Edward Whistle
- Elektra Records, Blizzard/Sound Ideas, WIND - SIBERIAN WIND, WEATHER
- Elektra Records, Factory Whistle/Hollywoodedge, Factory Site Whistle PE275901/Sound Ideas, WHISTLE, STEAM - FACTORY WHISTLE, LARGE FACTORY/Sound Ideas, WHISTLE, FACTORY - STEAM WHISTLE: TWO BLASTS, INDUSTRY 01
- Elektra Records, Steam Locomotive (Slightly higher pitch and speed; used as the chugging sound on Thomas.)
- Flora Bell (Used for Toby's bell.)
- H-B SPIN, CARTOON - WACKY SPIN WITH DRUM
- H-B ZIP, CARTOON - HIGH WHISTLE ZING OUT
- H-B ZIP, CARTOON - LOW WHISTLE ZING OUT
- Hollywoodedge, Ascending Whistles CRT057901 (Heard once in "Rules of the Game".)
- Hollywoodedge, Ascending Whistles CRT057902 (Heard once in "License to Deliver" and "Chasing Rainbows".)
- Hollywoodedge, Bird Hawk Single Scre PE020801/Hollywoodedge, Hawk Screech Single AT082901
- Hollywoodedge, Bird Seagull Four Sin PE021601
- Hollywoodedge, Bounce Boing Drum CRT016901/Sound Ideas, BOINK, CARTOON - TIMP DOINK
- Hollywoodedge, Bounce Jews Harp CRT015802 (Often used for Bruno when he bounces.)
- Hollywoodedge, Cartoon Streaks 5 SS016505
- Hollywoodedge, Cartoon Streaks 6 SS016506
- Hollywoodedge, Cartoon Twangs High TE021002 (Heard once in "Rules of the Game".)
- Hollywoodedge, Cattle Cow Bellow Sin AT041503 (Heard once in "Calliope Crack-Up" and "Nia's Perfect Plan".)
- Hollywoodedge, Cattle Cow Moo Bellow AT041501
- Hollywoodedge, Cattle Cow Moo Bellow AT041601
- Hollywoodedge, Cattle Cow Moo Bellow AT041701
- Hollywoodedge, Cattle Cow Moo Bellow AT041702
- Hollywoodedge, Cattle Cow Moo Bellow AT041705
- Hollywoodedge, Chickens Clucks Farm AT084301
- Hollywoodedge, Cow Moo SS022201
- Hollywoodedge, Crane Interior Engin PE197901
- Hollywoodedge, Drip Single Falls Liq PE041401
- Hollywoodedge, Egg Timer Bell DingsL PE193601
- Hollywoodedge, Fog Horn 1 SS017201 (Used for the Lighthouse in "License to Deliver".)
- Hollywoodedge, Gooey Splat CRT052405
- Hollywoodedge, Hammer Hitting An Anv TE037904/SoundDogs, Impacts & Crashes Metal - Anvil Hits - Metal Anvil Hits 05
- Hollywoodedge, Head Bonk CRT2016601 (Higher pitch; heard once in "A Thomas Promise".)
- Hollywoodedge, Head Bonk 2 Types One CRT032402 (Heard once in "Dragon Run".)
- Hollywoodedge, Heavy Thick Splat CRT052404
- Hollywoodedge, Jews Harp Boings 3x CRT016003 (3rd boing only; heard once in "License to Deliver".)
- Hollywoodedge, Large Splash Or DiveW PE127401
- Hollywoodedge, Large Splash Or DiveW PE127601
- Hollywoodedge, Lightning 08 CloseG SIG012601
- Hollywoodedge, Lincoln Town Car In Sk PE073501
- Hollywoodedge, Low Pitched Squeak CRT049301
- Hollywoodedge, Metal Creaks Machine FS015804/Sound Ideas, FRICTION & STRESS - SQUEAL: TRAIN BRAKING, DISTANT, HIGH SQUEALS WITH RATTLE (It's sometimes used when Gordon stops.)
- Hollywoodedge, Night Ambience Heavy PE011601
- Hollywoodedge, Night Ambience Light PE011701
- Hollywoodedge, Night Jungle Ambienc PE011101 (Heard once in "License to Deliver".)
- Hollywoodedge, Owl Great Horned Hoot AT083001
- Hollywoodedge, Owl Hoot Classic TE013201/Sound Ideas, BIRD, OWL - SINGLE OWL HOOTING, ANIMAL
- Hollywoodedge, Police Whooper Siren CT062001
- Hollywoodedge, Quick Whistle Zip By CRT057501
- Hollywoodedge, Quick Whistle Zip By CRT057502
- Hollywoodedge, Quick Whistle Zip By CRT057503
- Hollywoodedge, Quick Whistle Zip By CRT057505
- Hollywoodedge, Rooster Crow Typical AT086301
- Hollywoodedge, Seagulls No Surf BT022101
- Hollywoodedge, Sheep Baa Medium Pers PE027001
- Hollywoodedge, Sheep Bleat Single Cl AT048501
- Hollywoodedge, Short Rapid ShakesC CRT014402 (Heard once in "A Thomas Promise".)
- Hollywoodedge, Single Frog Croak Cl CRT013001
- Hollywoodedge, Slide Whistle In Out CRT057601 (Heard once in "Rules of the Game" and "More Cowbell".)
- Hollywoodedge, Slide Whistle In Out CRT057602 (Heard once in "Rules of the Game" and "Shake, Rattle, and Bruno".)
- Hollywoodedge, Slide Whistle In Out CRT057603 (Heard once in "Rules of the Game".)
- Hollywoodedge, Slide Whistle Up Dw CRT2028301 (5th slide up; heard once in "Counting Cows".)
- Hollywoodedge, Sm Heavy Metal Door Sl PE185001 (Higher pitch; heard once in "Backwards Day".)
- Hollywoodedge, Steam Train Whistle BB030201 (Used as Hiro's whistle in a lower pitch.)
- Hollywoodedge, Steam Train WhistleS 3D024701 (Used once for James' whistle in "License to Deliver".)
- Hollywoodedge, Steam Train WhistleS 3D024901 (Used once in the background in "Kana Goes Slow", when Thomas and Kana reach Vicarstown Station.)
- Hollywoodedge, Thin Metallic Pot Or CRT031203
- Hollywoodedge, Thunder Dry Rumbles PE050901
- Hollywoodedge, Train Air Whistle An BFX031101 (Used as Yong Bao's Whistle.)
- Hollywoodedge, Train Exterior Persp PE064201 (The 2nd wheel squeal is heard once in "The Super-Long Shortcut".)
- Hollywoodedge, Train Horn Freight Tr TE046004
- Hollywoodedge, Train Whistle 3 Vario AC011601
- Hollywoodedge, Wet Splats Various CRT052302
- Hollywoodedge, Wheezy Honk Cymbal PE941302
- Hollywoodedge, Whistle Spins CRT058304
- Hollywoodedge, Whistling Wind Mediu PE032901/Hollywoodedge, Wind Cold Whistle BT022801
- Hollywoodedge, Wolf Howl Single Echo AT028701
- Hollywoodedge, Wood Hits Debris Heav FS020702
- Hollywoodedge, Wubble Wobble Spring PE940704
- James Whistle (Used as James' whistle.)
- Nelvana Bounce Sound
- Nelvana Foley Swish Sound
- Nelvana Ping Sound
- Nelvana Short Slide Up Sound
- Nelvana Siren Whistle Sound
- Nelvana Siren Whistle Sound 2
- Nelvana Thunder (Heard once in "Ghost Train".)
- Nelvana Train Brake Sound Effect (Heard once in a low pitch, mixed with the second brake squealing portion of Hollywoodedge, Train Exterior Persp PE064201 in "The Super-Long Shortcut".)
- Nelvana Zip Sound
- Percy Whistle (Used in the theme song alongside Thomas and James' whistles)
- SoundDogs, Sound Design, Train Zing By New As (Used multiple times in numerous episodes when the engines pass by at high speeds.)
- SoundDogs, Toy Train Whistle (Used as Percy's whistle.)
- SoundDogs, Trains, Brakes & Wheels, Train Brake Squeal 02
- SoundDogs, Trains, Horns & Whistles - Train Horn Blasts Short 2X 01. Clean (Used as Carly's horn.)
- SoundDogs, Trains - Locomotive Whistle (Used as Diesel's horn.)
- Sound Ideas, BAT - SQUEALS, ANIMAL
- Sound Ideas, BELL, COWBELL - SMALL COWBELL RATTLE
- Sound Ideas, BELL, RAILROAD - RAILROAD CROSSING SIGNAL BELL: RINGING
- Sound Ideas, BIRD, OWL - CALLING, ANIMAL 02
- Sound Ideas, BIRD, SILKY CHICKEN - RAPID CALLS, ANIMAL (Heard once in "More Cowbell" and thrice in "Sir Topham Hatt's Hat".)
- Sound Ideas, BIRDS, VARIOUS - RESIDENTIAL AMBIENCE, EARLY MORNING, COUNTRY 01
- Sound Ideas, BLINK, CARTOON - XYLO EYE BLINKS
- Sound Ideas, BOAT, FERRY - LARGE PASSENGER FERRY BOAT: EXTERNAL: THREE DISTANT HORN BLASTS 02
- Sound Ideas, BOING, CARTOON - BIG BOING (Heard once in "Dragon Run".)
- Sound Ideas, BOING, CARTOON - BIG, LONG BOING (Heard once in "Dragon Run".)
- Sound Ideas, BOING, CARTOON - BOINK AND WIGGLE (Heard once in "Dragon Run".)
- Sound Ideas, BOING, CARTOON - EARS DRUM BOUNCE
- Sound Ideas, BOING, CARTOON - GONG BOING (Heard once in "Dragon Run".)
- Sound Ideas, BOING, CARTOON - GOOD SPRONG 01 (Heard once in "Dragon Run".)
- Sound Ideas, BOING, CARTOON - GOOD SPRONG 02 (Heard once in "Dragon Run".)
- Sound Ideas, BOING, CARTOON - HOYT'S BOING (Used for Devious Diesel and Sandy whenever they bounce in multiple episodes, especially in "A Thomas Promise". It is also used randomly, too.)
- Sound Ideas, BOING, CARTOON - RIPPLE BOING (Heard once in "Dragon Run".)
- Sound Ideas, BOING, CARTOON - THIN WOOD BOING (Heard once in "Dragon Run".)
- Sound Ideas, BOING, CARTOON - TROMBOING (Heard once in "Dragon Run".)
- Sound Ideas, BOINK, CARTOON - BOINK 01
- Sound Ideas, BOINK, CARTOON - HOYT'S BOINK
- Sound Ideas, CARTOON - BIG TRASH COMMOTION, CRASH
- Sound Ideas, CARTOON - CHARACTER TAKE OFF AND RUN OVER SECOND CHARACTER, CRASH
- Sound Ideas, CARTOON - FAST HITS, FIGHT
- Sound Ideas, CARTOON - HUMAN CATAPULT
- Sound Ideas, CARTOON, BELL - SMALL BELL CHIMES, GLISS UP, MUSIC, PERCUSSION
- Sound Ideas, CARTOON, BELL - SMALL, HOLLOW, METALLIC 02
- Sound Ideas, CARTOON, BOING - JEWS HARP BOING
- Sound Ideas, CARTOON, BOING - JEW'S HARP BOING, SHORT 02
- Sound Ideas, CARTOON, BOING - STRING PLUCK
- Sound Ideas, CARTOON, HORN - PARTY HORN, TWO TOOTS 01
- Sound Ideas, CARTOON, SLIDE - SHORT VIOLIN SLIDE DOWN
- Sound Ideas, CARTOON, SLIDE - SHORT VIOLIN SLIDE UP
- Sound Ideas, CARTOON, SWISH - LONG SWISH BY
- Sound Ideas, CARTOON, TWANG - WOBBLING TWANG
- Sound Ideas, CARTOON, WHISTLE - FALL WHISTLE, LONG
- Sound Ideas, CARTOON, WHISTLE - FALL WHISTLE, MEDIUM 01
- Sound Ideas, CARTOON, WHISTLE - FALL WHISTLE, SHORT
- Sound Ideas, CARTOON, WHISTLE - SLIDE WHISTLE: FAST ZIP BY 01 (Heard once in "Lost and Found".)
- Sound Ideas, CARTOON, WHISTLE - SLIDE WHISTLE: FAST SLIDE UP, ZIP 03 (Heard once in "Calliope Crack-Up".)
- Sound Ideas, CARTOON, WHISTLE - SLIDE WHISTLE: QUICK ZIP DOWN
- Sound Ideas, CARTOON, WHISTLE - SLIDE WHISTLE: SEVERAL QUICK ZIPS UP 01
- Sound Ideas, CARTOON, WHISTLE - SLIDE WHISTLE: ZIP UP (Heard once in "License to Deliver".)
- Sound Ideas, CARTOON, WHISTLE - TRAIN WHISTLE, HIGH (Used in a high pitch for Edward's Whistle in "Letting Off Steam".)
- Sound Ideas, CHICKEN - BARNYARD, C.U. CLUCK, SQUAWK, FLAP, ANIMAL, BIRD (Heard once in "More Cowbell".)
- Sound Ideas, COMEDY, ACCENT - SLIDE WHISTLE UP
- Sound Ideas, COMEDY, ACCENT - WHOOP WHISTLE: LONG
- Sound Ideas, COMEDY, ACCENT - WHOOP WHISTLE: SHORT
- Sound Ideas, COUNTRY, DAY - BIRDS, CRICKETS, STEADY BREEZE, AMBIENCE
- Sound Ideas, COW - SINGLE MOO, ANIMAL 01
- Sound Ideas, COW - SINGLE MOO, ANIMAL 02 (Heard once in "Letting Off Steam" and "Nia's Perfect Plan" and twice in "Christmas Mountain".)
- Sound Ideas, COW - TWO SHORT MOOS, ANIMAL
- Sound Ideas, COWBELL - RATTLE, SHORT, MUSIC, PERCUSSION
- Sound Ideas, CRASH, CARTOON - SOLID BASS, DRUM AND CYMBAL CRASH, MUSIC, PERCUSSION 01
- Sound Ideas, DOOR, WOOD - OPEN 02
- Sound Ideas, ELECTRICITY, SPARK - HIGH VOLTAGE SPARK, ELECTRICAL 02
- Sound Ideas, FANTASY - TONAL SPARKLE GLISS 01/Sound Ideas, MAGIC, CARTOON - SHORT TONAL SPARKLE GLISS, COMEDY 01
- Sound Ideas, FANTASY - TONAL SPARKLE GLISS 02/Sound Ideas, MAGIC, CARTOON - SHORT TONAL SPARKLE GLISS, COMEDY 02
- Sound Ideas, FANTASY - TONAL SPARKLE GLISS 03/Sound Ideas, MAGIC, CARTOON - SHORT TONAL SPARKLE GLISS, COMEDY 03
- Sound Ideas, FANTASY - TONAL SPARKLE GLISS 04/Sound Ideas, MAGIC, CARTOON - SHORT TONAL SPARKLE GLISS, COMEDY 04
- Sound Ideas, FIRE, BALL - IMPACT AND LARGE FIRE BURST, RUMBLE
- Sound Ideas, FOREST, DAY - BIRDS, STEADY LIGHT BREEZE THROUGH TREES, AMBIENCE
- Sound Ideas, GLASS, DOOR - WOOD FRAMED GLASS DOOR WITH BELL ON SMALL GENERAL STORE: INTERNAL: OPEN, MEDIUM PERSPECTIVE 03
- Sound Ideas, HARP - CHORDAL GLISS, UP, MUSIC
- Sound Ideas, HEAD SHAKE, CARTOON - PINGY HEAD SHAKE
- Sound Ideas, HEAD SHAKE, CARTOON - XYLO HEAD SHAKE
- Sound Ideas, HIT, CARTOON - BIG HEAD BONK
- Sound Ideas, HIT, CARTOON - BRAKE DRUM AND BULB HORN HIT
- Sound Ideas, HIT, CARTOON - COCONUT HIT 01
- Sound Ideas, HIT, CARTOON - HOLLOW HEAD KONK AND ZIP/Sound Ideas, ZIP, CARTOON - COWBELL ZIP
- Sound Ideas, HIT, CARTOON - KABONG
- Sound Ideas, HIT, CARTOON - LID ON MANHOLE HIT
- Sound Ideas, HOP, CARTOON - DOUG'S FUNNY HOP, LONG
- Sound Ideas, HORN, BICYCLE - BULB HORN: SINGLE HONK, TOY (Used as Sandy's horn.)
- Sound Ideas, HORN, BOAT - TUG BOAT HORN: ONE LONG AND TWO SHORT BLASTS (Lower pitch; used as Bulstrode's horn)
- Sound Ideas, HORN, BOAT - TUG BOAT HORN: ONE LONG BLAST
- Sound Ideas, INDUSTRY, HYDRAULIC - ELECTRIC HYDRAULIC MACHINE: UP FULL, FACTORY
- Sound Ideas, MAGIC - MAGIC BURST/Sound Ideas, SCI FI - FUTURE CHICK BURST
- Sound Ideas, ORCHESTRA BELLS - GLISS, UP, MUSIC, PERCUSSION
- Sound Ideas, PLINK, CARTOON - SOUR PLINK
- Sound Ideas, PLUCK, CARTOON - VAROOP
- Sound Ideas, RICOCHET - BOW STRING RICCO
- Sound Ideas, RICOCHET - CARTOON RICCO 01
- Sound Ideas, RICOCHET - CARTOON RICCO 05
- Sound Ideas, ROBOT, MOTOR - ROBOT SERVO MOTOR 02
- Sound Ideas, ROBOT, MOTOR - ROBOT SERVO MOTOR 03
- Sound Ideas, ROBOT, MOTOR - ROBOT SERVO MOTOR 05
- Sound Ideas, RUN, CARTOON - WIND WHISTLE SCAT
- Sound Ideas, SHEEP - BABY CALLING, ANIMAL 02
- Sound Ideas, SKID, CARTOON - BROKEN SKID
- Sound Ideas, SLIDE, CARTOON - FIDDLE SLIDE UP 01
- Sound Ideas, SPLAT, CARTOON - PIE IN FACE SPLAT
- Sound Ideas, SQUEAK, CARTOON - LITTLE ZABORK
- Sound Ideas, SQUISH, CARTOON - SOFT SQUISH
- Sound Ideas, SQUISH, MUD - SINGLE MUD BUBBLE SQUISH 02
- Sound Ideas, TAKE, CARTOON - WHISTLE TAKE
- Sound Ideas, THUNDER - THUNDER CLAP AND RUMBLE, WEATHER 01 (Series 6000)
- Sound Ideas, TIP TOE, CARTOON - XYLOPHONE TIP TOE, LONG/MEDIUM/SHORT
- Sound Ideas, TRACTOR, STEAM - STEAM WHISTLE, SHORT (Heard multiple times in "A Quiet Delivery".)
- Sound Ideas, TRAIN, STEAM - START IN MOTION 02
- Sound Ideas, TRAIN, STEAM - STEAM TRAIN: BRAKING TO STOP, HEAVY BRAKE SQUEAL
- Sound Ideas, TRAIN, STEAM - STEAM TRAIN: IDLE, LOUD STEAM RELEASE CHUGS
- Sound Ideas, TRAIN, STEAM - STEAM TRAIN: ON BOARD ENGINE: STEADY, HEAVY CHUGGING (Mostly used as James' chugging sound in certain episodes.)
- Sound Ideas, TREE FALLING - CREAKING, HIT GROUND HEAVILY, FOREST, LOGGING (Heard once in "A Wonderful World".)
- Sound Ideas, TRUCK, HORN, AIR - TWO BLASTS 01 (Used as Salty's horn.)
- Sound Ideas, WATER, OCEAN - SEAGULLS, WAVES COMING IN, SEASHORE, SURF, BEACH, BIRD/Valentino Seagulls (Heard in a high pitch in "Hide and Surprise!".)
- Sound Ideas, WHISTLE - TRAIN WHISTLE: MEDIUM: THREE QUICK TOOTS (Used as Nia's whistle.)
- Sound Ideas, WHISTLE, SLIDE - QUICK SLIDE DOWN, CARTOON 02 (Heard once in "Dragon Run".)
- Sound Ideas, WHISTLE, SLIDE - QUICK SLIDE UP, CARTOON (Heard once in "Dragon Run".)
- Sound Ideas, WHISTLE, STEAM - 3.5 IN MILL STEAM WHISTLE: TRAIN CALL, WHISTLES, COMIC NOISEMAKERS, BICYCLES & MOUNTAIN BIKES 01 (Used as Gordon's whistle.)
- Sound Ideas, WHISTLE, STEAM - 3.5 IN MILL STEAM WHISTLE: TRAIN CALL, WHISTLES, COMIC NOISEMAKERS, BICYCLES & MOUNTAIN BIKES 02 (Used as Gordon's whistle.)
- Sound Ideas, WHISTLE, STEAM - STEAM TRAIN WHISTLE: MEDIUM (Heard only in the background of Brendam Docks in "Thomas Blasts Off".)
- Sound Ideas, WIND - HOWLING AND WHISTLING, WEATHER
- Sound Ideas, ZIP, CARTOON - BIG WHISTLE ZING IN
- Sound Ideas, ZIP, CARTOON - BIG WHISTLE ZING OUT
- Sound Ideas, ZIP, CARTOON - HOYT'S ZIP
- Sound Ideas, ZIP, CARTOON - QUICK WHISTLE ZIP OUT
- Sound Ideas, ZIP, CARTOON - SHARP WHISTLE ZIP
- Sound Ideas, ZIP, CARTOON - SHARP ZIP
- Sound Ideas, ZIP, CARTOON - SHORT BABOO ZIP
- Sound Ideas, ZIP, CARTOON - TAKE ZIP
- Thomas Whistle (Used as Thomas' whistle.)
- Unknown Sound Effects Library, High Electric Warble
- Unknown Sound Effects Library, Low Electric Warble
- Unknown Sound Effects Library, Old Car Horn (Used as Winston's horn.)
- Unknown Sound Effects Library, Small Servo Movement (Often heard when Kana releases her front coupler.)
- Unknown Sound Effects Library, Toy Train Whistle 02 (Used as Thomas' whistle during the musical number of "Number One Engine".)
- Unknown Sound Effects Library, Train Horn 06 (Used as Kenji's horn.)
- Unknown Sound Effects Library, Train Whistle 16 (Used as Yong Bao's whistle in "Cronk's Crossing Conundrum".)
- Unknown Sound Effects Library, Train Whistle 29 (Used as Emily's whistle in a high pitch.)