| 1. |  Kadz | Fireflies but every line is pitch shifted perfectly so that it sounds amazing | 2,063 | |
| 2. | Black Gryph0n | FireFlies (NO AUTOTUNE) - Black Gryph0n Cover | 1,910 | |
| 3. | R Λ Z Ξ R | The Razer Firefly | Let there be light | 1,375 | |
| 4. | Looper | The Untold Truth Of Firefly | 1,000 | |
| 5. | Kadz | Fireflies but Google Translate makes the lyrics better | 994 | |
| 6. | Looper | Firefly Fans Could Be Getting Great News Soon | 861 | |
| 7. | Seri! Pixel Biologist! | Enchanted by Fireflies... • Warrior Cats: Untold Tales - Episode #4 | 836 | |
| 8. | Mr Rock | Wii Theme but its Fireflies | 688 | |
| 9. | JDfromNY206 | WWE Raw May 13, 2019 Full Show Review & Results: BRAY WYATT'S BIG SECRET ON FIREFLY FUNHOUSE! | 423 | Review |
| 10. | Kadz | Fireflies but the melody is reversed while the words stay the same | 339 | |
| 11. | Lore Reloaded | Starship Lore : Firefly Class - The RV of the 'Verse | 331 | |
| 12. | Kadz | Ed City - Shape of Fireflies | 314 | |
| 13. | WalcomS7 | The best shell ejecting NERF Shotgun just got BETTER! WS7 Limited Edition Firefly Shotgun! | 243 | |
| 14. | Tolarian Community College | A Critical Review of the Firefly Board Game | 222 | Review |
| 15. | Phoenix Nitro | You Need To See This WSC Firefly Funhouse Action Figure Match | 215 | |
| 16. | StarInSky | Shadow Fight 3. Fireflies - NEW Legendary Composite Glaive Gameplay. AMAZING Moves and Abilities! | 213 | |
| 17. | How To Beat Anime | How To Beat DEATH in "Grave of the Fireflies" | 201 | Guide |
| 18. | Papi Galleto | Stan Twitter: Person dancing to Fireflies by Owl City in their car! | 157 | |
| 19. | R Knights | FINALE!!! Firefly 1x14 Reaction | Objects in Space | First Time Watching | 156 | Show |
| 20. | Kadz | Dance Till You're Fireflies | 153 | |
| 21. | WalcomS7 | The BEST NERF Shotgun just got BETTER! Firefly Magazine Upgrade! | 151 | |
| 22. | OnTableTop | What's in the Box: Firefly, Prime Axiom & Anarchy Models - Basing Bits! | 150 | |
| 23. | ClickteamLLC | Project Firefly Teaser | 149 | |
| 24. | Off The Shelf Board Game Reviews | Off The Shelf Board Game Tutorials Presents - How To Play Firefly | 138 | Tutorial |
| 25. | JLS Comics | History and Origin of GI Joe's FIREFLY! | 129 | |
| 26. | WaterTower Music | IT Chapter Two Official Soundtrack | Firefly - Benjamin Wallfisch | WaterTower | 111 | |
| 27. | MunchingOrange | MO sings Fireflies | 94 | |
| 28. | Movies Vibes | Firefly Lane Season 2 Part 1 Ending Explained | 94 | |
| 29. | Lisa Nguyen | Dining with Fireflies | 93 | |
| 30. | ClickteamLLC | Disaster at Firefly Station - Trailer | 92 | |
| 31. | Naptown Nerf | [REVIEW] A True NERF Tactical Shotgun! (The FIREFLY from Colonel WASP) | 89 | Review |
| 32. | Monster Gaming | Monster Legends: Firefly Level 1 To 100 | The Last Metropolitan Bounty Hunt Mythic | Skills & Combat | 87 | |
| 33. | R Knights | WE DID NOT SEE THIS COMING!!!! | Firefly 1x6 Reaction | Mrs. Reynolds | First Time Watching | 85 | Show |
| 34. | R Knights | Firefly 1x2 Reaction | The Train Job | First Time Watching | 81 | Show |
| 35. | dwightx | Supermechs⛅ (FireFly) MAXED 🔥 & Ranked Floor Pads 2v2s | 80 | |
| 36. | Kadz | to TEn MiLLIoN FiREFLIEs I'm WEird caUsE I HAtE goOdBYEs | 79 | |
| 37. | Fandom Spotlite | FIREFLY / SERENITY Panel - Wizard World Philadelphia 2019 | 78 | Let's Play |
| 38. | THESNEAKERADDICT | Nike SB Dunk High De La Soul White Firefly Sneaker Review On Feet W/ Comparison With OG Green | 68 | Review |
| 39. | R Knights | OUR FAVORITE SO FAR!!! | Firefly 1x8 Reaction | Out of Gas| First Time Watching | 67 | Show |
| 40. | TheBigPayback - Slot Machine Videos | Wild Firefly Slot - $10 Max Bet - BIG WIN BONUS! | 62 | |
| 41. | R Knights | Firefly 1x13 Reaction | Heart of Gold | First Time Watching | 59 | Show |
| 42. | Jeff Favignano | VLOG #26 - Fireflies | 57 | Vlog |
| 43. | ClickteamLLC | Firefly Teaser #3 | 53 | |
| 44. | LONDON CITY | View of Anakeesta's Firefly Village with the Great Smoky Mountains in the background | 52 | |
| 45. | Temmie Plays! | To 10,000,000 Fireflies, If 10,000,000 Fireflies | 52 | |
| 46. | Lucky Penny Shop | Firefly in a Jar, Glows and Acts Like the Real Thing - Spring or Easter Basket Item | 51 | |
| 47. | R Knights | Firefly 1x10 Reaction | War Stories | First Time Watching | 49 | Show |
| 48. | Phoenix Nitro | The First WSC Firefly Funhouse Match Was Insane | 48 | |
| 49. | R Knights | THE MAN THEY CALL JAYNE!!! | Firefly 1x7 Reaction | Jaynestown | First Time Watching | 48 | Show |
| 50. | ONE Media + | FIREFLY ONLINE Gameplay Trailer (with Nathan Fillion) | 47 | Preview |
| 51. | Alex Giudici | Grave of the Fireflies - Setsuko & Seita (Alex Giudici Remix) | 46 | |
| 52. | R Knights | Firefly 1x5 Reaction | Safe | First Time Watching | 46 | Show |
| 53. | GT | Razer Firefly Unboxing | 44 | |
| 54. | One Stop Co-op Shop | Legendary Encounters: Firefly (POTENTIAL SPOILERS) | 41 | |
| 55. | GEEK WHAT!? | Firefly Reboot Coming To Disney+ | 40 | |
| 56. | R Knights | Firefly 1x4 Reaction | Shindig | First Time Watching | 39 | Show |
| 57. | UnrealHero | Razer Firefly V2 Review | Firefly vs Firefly V2 Comparison | 39 | Review |
| 58. | R Knights | Firefly 1x9 Reaction | Ariel | First Time Watching | 39 | Show |
| 59. | R Knights | Firefly 1x11 Reaction | Trash | First Time Watching | 38 | Show |
| 60. | R Knights | Firefly 1x3 Reaction | Bushwacked | First Time Watching | 38 | Show |
| 61. | R Knights | Firefly 1x12 Reaction | The Message | First Time Watching | 37 | Show |
| 62. | Oggie Doggie | March's Loot Crate DX - Worst Box EVER - Captain Marvel - Aliens - BSG - Firefly | 36 | |
| 63. | Silent Johnny | Briefly About The Relationship Between Marauders And Fireflies - Lost Light | 35 | |
| 64. | REDROMINA | Nightime Adventures with Blue Ghost Fireflies // Asheville Hiking | 34 | |
| 65. | Silent Johnny | The Grenade Is A Sneaky Enemy Of Fireflies - Lost Light | Day 87 | Gameplay #320 | 32 | |
| 66. | ONE Media + | Firefly The Video Game Trailer | 32 | Preview |
| 67. | OSSA | Firefly Lane Cast: Real-Life Partners Revealed! |⭐ OSSA | 32 | |
| 68. | Necroxis | Patch 5.5 Confirmation + Firefly! - Necroxis Lorepdates | 30 | |
| 69. | Illumi Music | SICK INDIVIDUALS - Fireflies (feat. Nazzereene) [Festival Mix] | 29 | |
| 70. | 8BE | Shiny the Firefly (Wii U) Review | 8-Bit Eric | 28 | Review |
| 71. | John & Michelle: Video Games, Tech, Humor, Reviews | Razer Chroma Firefly and Deathadder Gaming Mouse and Mousepad review. Is it worth the $100? | 27 | Review |
| 72. | BoardGameCo | Gamefound Feast - Beast Reprint, Carson City, Coloma, Firefly Deluxe & More! | 26 | |
| 73. | Rama's Screen | Movie Review: Netflix HAVE YOU EVER SEEN FIREFLIES? a.k.a 'Sen Hiç Atesböcegi Gördün mü?' | 26 | Review |
| 74. | Looper Español | Los Fans De Firefly Pronto Podrían Recibir Muy Buenas Noticias | 26 | |
| 75. | OnTableTop | Bolt Action Unboxing: Sherman VC Firefly | 26 | |
| 76. | Roll For Crit | How to Play Firefly The Game - Roll For Crit | 25 | Tutorial |
| 77. | BaldHeaded METAL | Orbit Culture Flight Of The Fireflies REACTION | 25 | |
| 78. | Off The Shelf Board Game Reviews | Off The Shelf Board Game Reviews Presents - Firefly | 25 | Review |
| 79. | Silent Johnny | Marauders Are Killing Fireflies! - Lost Light | 24 | |
| 80. | Krad Dark Arts AMVs | K On! Fireflies AMV | 21 | |
| 81. | Crabbok | Firefly: Misbehavin' - Gameplay Walkthrough and Review | 19 | Review |
| 82. | JonoHasMono | Fireflies - JonoHasMono | 19 | |
| 83. | ID@Xbox | Project Fireflies Teaser Trailer | 19 | Preview |
| 84. | Avient | Firefly | Andromedik - Avient Music | 18 | |
| 85. | TheTekkitRealm | YouTubers Sing FireFlies by Owl City | 17 | |
| 86. | SeanSkee20 | Fireflies leave | 14 | |
| 87. | OnTableTop | "I Am A Leaf On The Wind!" - Firefly Board Game Demo! | 14 | |
| 88. | Bower's Game Corner | Firefly: The Game - 10th Anniversary Collector's Edition - Kickstarter Critique Review | 14 | Review |
| 89. | SageNine Music | Fireflies & Lo-Fi 🌙 Relaxing LoFi for Summer | 14 | |
| 90. | CloudNinja | Owl City - Fireflies (CloudNinja Remix) | 13 | |
| 91. | John & Michelle: Video Games, Tech, Humor, Reviews | Ajazz Budget RGB Lit Hard Gaming Mouse Pad! Razer Firefly Dupe? Unboxing review & comparison! | 13 | |
| 92. | Super Isaiah | OwlTale: Fireflyvania (Fireflies + Megalovania Remix) | 13 | |
| 93. | CurryPotato | 🌟Firefly | 13 | |
| 94. | Tu Tran | Monster Legends: Quái Vật Kiến Lửa Siêu Đốt Review | Firefly Monster | 12 | Review |
| 95. | OnTableTop | Unboxing Firefly Adventures | 12 | |
| 96. | Z7duckx | Attempting to Default Dance to Every Beat: Fireflies | 12 | |
| 97. | OnTableTop | Flames Of War Painting Tutorial - Sherman Firefly | 11 | Tutorial |
| 98. | Omega Ordained | Firefly Episode Overview 06 Our Mrs. Reynolds (Firefly) | 10 | Show |
| 99. | Amigos Retro Gaming | Joffa Smith's finest? Firefly - Our Sinclair: An American Take on the ZX Spectrum 83 | 10 | |
| 100. | Gunjamed | Firefly Online Let's try 2 | 9 | |
