A Certain Scientific Railgun Filler List contains all Filler episodes and Canon episodes. All episodes of this anime show can be found in the below table. As soon as a new episode is announced, we update it here in the table.
| # | Title | Type | Airdate |
|---|---|---|---|
| 1 | Electromaster | Manga Canon | 2009-10-02 |
| 2 | When Working Under a Hot Sun, Rehydration is Essential | Mixed Canon/Filler | 2009-10-09 |
| 3 | Tokiwadai is Targeted | Filler | 2009-10-16 |
| 4 | Urban Legends | Manga Canon | 2009-10-23 |
| 5 | A Certain Pair of New Trainees | Manga Canon | 2009-10-30 |
| 6 | Everyone is Proactive When it Comes to This | Manga Canon | 2009-11-06 |
| 7 | Abilities and Powers | Manga Canon | 2009-11-13 |
| 8 | Level Upper | Manga Canon | 2009-11-20 |
| 9 | Majority Report | Manga Canon | 2009-11-27 |
| 10 | Silent Majority | Manga Canon | 2009-12-04 |
| 11 | Dr. Kiyama | Manga Canon | 2009-12-11 |
| 12 | AIM Burst | Manga Canon | 2009-12-18 |
| 13 | A Bikini Divides the Eyeline Between Top and Bottom, But a One-piece Shows Off the Figure, so They Only Flatter the Slender | Filler | 2009-12-25 |
| 14 | Special Workshop | Filler | 2010-01-08 |
| 15 | Skill Out | Anime Canon | 2010-01-15 |
| 16 | Academy City | Anime Canon | 2010-01-22 |
| 17 | Tsuzuri’s Summer Vacation | Filler | 2010-01-29 |
| 18 | Asunaro Park | Filler | 2010-02-05 |
| 19 | Midsummer Festival | Filler | 2010-02-12 |
| 20 | Poltergeist | Anime Canon | 2010-02-19 |
| 21 | Voices | Anime Canon | 2010-02-26 |
| 22 | Level 6 | Anime Canon | 2010-03-05 |
| 23 | What Is It You See In Your Eyes Right Now? | Anime Canon | 2010-03-12 |
| 24 | Dear My Friends | Anime Canon | 2010-03-19 |
| 25 | Railgun | Anime Canon | 2013-04-12 |
| 26 | Critical | Manga Canon | 2013-04-19 |
| 27 | Project Radio Noise | Manga Canon | 2013-04-26 |
| 28 | Sisters | Manga Canon | 2013-05-03 |
| 29 | Project Level 6 Shift | Manga Canon | 2013-05-10 |
| 30 | I… Can See All Of You | Manga Canon | 2013-05-17 |
| 31 | I… I Want To Be Of Help To You, Sissy | Filler | 2013-05-24 |
| 32 | ITEM | Manga Canon | 2013-05-31 |
| 33 | AIM Stalker | Manga Canon | 2013-06-07 |
| 34 | Meltdowner | Manga Canon | 2013-06-14 |
| 35 | The Vending Machine | Manga Canon | 2013-06-21 |
| 36 | Tree Diagram | Manga Canon | 2013-06-28 |
| 37 | Accelerator | Manga Canon | 2013-07-05 |
| 38 | The Promise | Manga Canon | 2013-07-12 |
| 39 | Kamijou Touma | Manga Canon | 2013-07-19 |
| 40 | Sisterhood | Manga Canon | 2013-07-26 |
| 41 | Study Group | Filler | 2013-08-02 |
| 42 | Moving | Filler | 2013-08-16 |
| 43 | Academic Reach Assembly | Filler | 2013-08-23 |
| 44 | Febri | Filler | 2013-08-30 |
| 45 | Darkness | Filler | 2013-09-06 |
| 46 | STUDY | Filler | 2013-09-13 |
| 47 | Silent Party | Filler | 2013-09-20 |
| 48 | Eternal Party | Filler | 2013-09-27 |
| 49 | Super-powered (Level 5) | Manga Canon | 2020-01-10 |
| 50 | The Daihasei Festival | Manga Canon | 2020-01-17 |
| 51 | Balloon Hunter | Manga Canon | 2020-01-24 |
| 52 | Tampering | Manga Canon | 2020-01-31 |
| 53 | Trust | Manga Canon | 2020-02-07 |
| 54 | The Battle Begins | Manga Canon | 2020-02-14 |
| 55 | Auribus oculi fideliores sunt. | Manga Canon | 2020-02-25 |
| 56 | Railgun ✕ Mental Out | Manga Canon | 2020-03-06 |
| 57 | Kozaku Mitori | Manga Canon | 2020-03-27 |
| 58 | Clone Dolly | Manga Canon | 2020-04-03 |
| 59 | Joining the Battle | Manga Canon | 2020-04-10 |
| 60 | Exterior | Manga Canon | 2020-04-17 |
| 61 | SYSTEM (Those Who Arrive at Heaven’s Will in an Only Human Body) | Manga Canon | 2020-05-01 |
| 62 | Dragon Strike (Jaw of the Dragon King) | Manga Canon | 2020-05-15 |
| 63 | Promise | Manga Canon | 2020-05-22 |
| 64 | Dream Ranker | Manga Canon | 2020-07-24 |
| 65 | Precognition | Manga Canon | 2020-07-31 |
| 66 | Bust Upper | Manga Canon | 2020-08-07 |
| 67 | Strange Coincidence | Manga Canon | 2020-08-14 |
| 68 | Ha Det Bra | Manga Canon | 2020-08-21 |
| 69 | Doppelganger | Manga Canon | 2020-08-28 |
| 70 | Scavenger | Manga Canon | 2020-09-04 |
| 71 | Possession | Manga Canon | 2020-09-11 |
| 72 | Diffusion | Manga Canon | 2020-09-18 |
| 73 | My Dear Friends | Manga Canon | 2020-09-25 |