The following is a timeline of canonical fiction for Halo media and promotional material, including video games, novels, comics, short stories, movies, and audio. Some dates are approximate.
| Timeline of Halo media | ||
|---|---|---|
| Year | Title | Author/Studio |
| 107,000 BCE | Halo 4 Terminal 1 - War | The Sequence Group |
| 107,000 BCE | Halo 4 Terminal 2 - Lord of Admirals | The Sequence Group |
| 106,000 BCE | Halo 4 Terminal 3 - Charum Hakkor | The Sequence Group |
| 106,000 BCE | Halo 4 Terminal 4 - Flood | The Sequence Group |
| 97,700 BCE | Soma the Painter | |
| 97,446 BCE | Halo: Cryptum | Greg Bear |
| 97,446 BCE | Halo: Primordium | Greg Bear |
| 97,446 BCE | Halo: Silentium | Greg Bear |
| 97,446 BCE | Halo 4 Terminal 5 - Knights | The Sequence Group |
| 97,446 BCE | Halo 4 Terminal 6 - Justice | The Sequence Group |
| 97,446 BCE | Halo 4 Terminal 7 - Cryptum | The Sequence Group |
| 97,446 BCE | The Cradle of Life | |
| 97,446 BCE | Halo: CEA Terminal 2 - Halo | The Sequence Group |
| 97,446 BCE | Halo: Rebirth | Greg Bear & Erik Bear |
| 40,000 BCE | Halo: CEA Terminal 4 - The Silent Cartographer | The Sequence Group |
| 40,000 BCE | Halo: CEA Terminal 5 - Assault on the Control Room | The Sequence Group |
| 40,000 BCE | Halo: CEA Terminal 6 - 343 Guilty Spark | The Sequence Group |
| 40,000 BCE | Halo: CEA Terminal 7 - The Library | The Sequence Group |
| 40,000 BCE | Halo: CEA Terminal 8 - Two Betrayals | The Sequence Group |
| 860 BCE (Prologue) 851-850 BCE (Part 1) 2552 CE (Part 2) |
Halo: Broken Circle | John Shirley |
| 2142 CE | The Duel | Production I.G. |
| 2310 CE | Halo Reach Data Pad 1 | |
| 2362 CE | Halo Reach Data Pad 2 | |
| 2381 CE | Halo Reach Data Pad 3 | |
| 2415 CE | Halo Reach Data Pad 4 | |
| 2491 CE | Halo Reach Data Pad 5 | |
| 2491 CE | Halo Reach Data Pad 6 | |
| 2508 CE | Halo Reach Data Pad 7 | |
| 2513-2517 CE (issue 1) 2517-2525 CE (issue 2) 2525 CE (issues 3-4) |
Halo: Fall of Reach - Boot Camp | Brian Reed |
| 2517 CE (Section 1) 2517-2525 CE (Section 2) 2552 CE (Sections 3-6) |
Halo: The Fall of Reach | Eric Nylund |
| 2517-2519 CE (Act 1) 2525 CE (Act 2-3) |
Halo: The Fall of Reach - The Animated Series | The Sequence Group & 343 Industries |
| 2517-2528 CE | Pariah | B. K. Evenson |
| 2524-2525 CE | Halo: Contact Harvest | Joseph Staten |
| 2525 CE | Halo Reach Data Pad 8 | |
| 2525 CE | Halo Reach Data Pad 9 | |
| 2525 CE (issue 1) 2525-2552 CE (issue 2) 2552 CE (issue 3-4) |
Halo: Fall of Reach - Covenant | Brian Reed |
| 2525-2531 CE | Halo Wars: Genesis | Eric Nylund |
| 2525 CE | Halo Reach Data Pad 10 | |
| 2525 CE | Halo Reach Data Pad 11 | |
| 2525 CE | Halo Reach Data Pad 12 | |
| 2526 CE | Halo 4: Forward Unto Dawn | |
| 2528 CE | Halo Reach Data Pad 13 | |
| 2530 CE | Halo Reach Data Pad 14 | |
| 2530 CE | I kissed a boy once. | |
| 2530 CE | Spirit of Bloody Fire. Cutter. Bloody hell. | |
| 2531 CE | I have a bridge to look after here. | |
| 2531 CE | Privilege | |
| 2531 CE | The Day Before | |
| 2531 CE | Sit down and strap in. | |
| 2531 CE | Homecoming | Production I.G., Bee Train |
| 2531 CE | Attacks | |
| 2531 CE | Halo Wars | Ensemble Studios |
| 2525 CE | Halo Reach Data Pad 15 | |
| 2531 CE (Section 1) 2531-2551 CE (Section 2) 2552 CE (Section 3-Epilogue) |
Halo: Ghosts of Onyx | Eric Nylund |
| 2532 CE | Prototype | Bones |
| 2532 CE | Midnight in the Heart of Midlothian | Frank O'Connor |
| 2533 CE | Birth of a Spartan | |
| 2535 CE | Halo Reach Data Pad 16 | |
| 2535 CE | Halo: The Cole Protocol | Tobias Buckell |
| 2542 CE | The Babysitter | Studio 4˚C |
| 2544 CE | The Package | Casio Entertainment |
| 2535 CE | Halo Reach Data Pad 17 | |
| 2550 CE | Cortana and Solipsil | |
| 2551 CE | Headhunters | Jonathan Goff |
| 2551 CE 2558 CE |
Halo: Escalation - The Glass Horizon | Duffy Boudreau |
| 2551-2552 CE | Halo: 2 Anniversary Terminal 14 - Beholden | The Sequence Group |
| 2552 CE | Halo Reach Data Pad 18 | |
| 2552 CE | Halo Reach Data Pad 19 | |
| 2552 CE (January) | Halo: Helljumper | Peter David |
| 2552 CE (April) | Deliver Hope | |
| 2552 (July) CE | Blunt Instruments | Fred Van Lente |
| 2552 (July) CE | Halo: Blood Line | Fred Van Lente |
| 2552 (July) CE | Halo: Reach | Bungie |
| 2552 (August) CE | Unggoy Conversation | |
| 2552 (August) CE (Section 0 & 2) 2552 (September) CE (Section 1 & 3-7) |
Halo: First Strike | |
| 2552 (September) CE | Dirt | Tobias Buckell |
| 2552 (September) CE | Black Box from Sacred Promise | |
| 2552 (September) CE | 343 Guilty Spark's Log | |
| 2552 (September) CE | The Flood | William C. Dietz |
| 2552 (September) CE | Halo: Combat Evolved | Bungie |
| 2552 (September) CE | Halo: Combat Evolved Anniversary | Bungie, Saber Interactive |
| 2552 (September) CE | Halo: CEA Terminal 1 - The Pillar of Autumn | The Sequence Group |
| 2552 (September) CE | Halo: CEA Terminal 3 - The Truth and Reconciliation | The Sequence Group |
| 2552 (September) CE | Breaking Quarantine | Tsutomu Nihei |
| 2552 (September) CE | The Last Voyage of the Infinite Succor | Lee Hammock |
| 2552 (September) CE | Halo: CEA Terminal 9 - Keyes | The Sequence Group |
| 2552 (September) CE | Halo: CEA Terminal 10 - The Maw | The Sequence Group |
| 2552 (September) CE | Halo: CEA Terminal 11 - Threshold | The Sequence Group |
| 2552 (September) CE | Halo: 2A Terminal 4 - Monitor Report: Heresy Indeed | The Sequence Group |
| 2552 (September) CE | Halo: 2A Terminal 5 - Monitor Report: Containment | The Sequence Group |
| 2552 (September) CE | Halo: 2A Terminal 7 - Monitor Report: Unequal Union | The Sequence Group |
| 2552 (September) CE | Halo: 2A Terminal 9 - Monitor Report: Divine Inspiration | The Sequence Group |
| 2552 (September) CE | Halo: 2A Terminal 11 - Monitor Report: Age of Doubt | The Sequence Group |
| 2552 (September) CE | Halo: 2A Terminal 13 - Monitor Report: False Journey | The Sequence Group |
| 2552 (September) CE | Halo: 2A Terminal 1 - ONI File: Target Profile | The Sequence Group |
| 2552 (September) CE | Halo: 2A Terminal 2 - ONI File: Honor Bound | The Sequence Group |
| 2552 (September) CE | Halo: 2A Terminal 3 - ONI File: Particular Justice | The Sequence Group |
| 2552 (September) CE | Letter from Supposition | |
| 2552 (September) CE | Sangheili Conversation | |
| 2552 (October) CE | Letter from Truth | |
| 2552 (October) CE | Armor Testing | Ed Lee, Jay Faerber, and Andrew Robinson |
| 2552 (October) CE | Letter to the Master Chief | |
| 2552 (October) CE | Halo: 2A Terminal 15 - Unyielding | The Sequence Group |
| 2552 (October–November) CE | Halo 2 | Bungie |
| 2552 (October–November) CE | Halo 2: Anniversary | Bungie, Saber Interactive |
| 2552 (October) CE | Another Day at the Beach | Bungie |
| 2552 (October) CE | Palace Hotel | Robert McLees |
| 2552 (October) CE | Second Sunrise Over New Mombasa | Brett Lewis |
| 2552 (October) CE | Sadie's Story | |
| 2552 (October) CE | Halo 3: ODST | Bungie |
| 2552 (October) CE | The Mona Lisa | Tessa Kum and Jeff VanderMeer |
| 2552 (November) CE | Halo: 2A Terminal 6 - Covenant Record: Will of the Prophets | The Sequence Group |
| 2552 (November) CE | Halo: 2A Terminal 8 - Covenant Record: Taming the Hunters | The Sequence Group |
| 2552 (November) CE | Halo: 2A Terminal 10 - Covenant Record: Unggoy Rebellion | The Sequence Group |
| 2552 (November) CE | Halo: 2A Terminal 12 - Covenant Record: The Great Schism | The Sequence Group |
| 2552 (November) CE | Wages of Sin | |
| 2552 (November) CE | Halo: Uprising | Brian Michael Bendis |
| 2552 (November) CE | Human Weakness | Karen Traviss |
| 2552 (November) CE | Halo: Landfall | |
| 2552 (November–December) CE | Halo 3 | Bungie |
| 2552 (December) CE | Living Moment | |
| 2552 (December) CE | The Impossible Life and the Possible Death of Preston J. Cole | Eric Nylund |
| 2553 CE | Halo: Glasslands | Karen Traviss |
| 2553 CE | Halo: Initiation | Brian Reed |
| 2553 CE | From the Office of Dr. William Arthur Iqbal | |
| 2553 CE | Shadow of Intent | Joseph Staten |
| 2553 CE | Halo: The Thursday War | Karen Traviss |
| 2553 CE | Halo: Mortal Dictata | Karen Traviss |
| 2553 CE | Halo: Last Light | Troy Denning |
| 2553 CE | Petra | |
| 2554 CE 2557 CE |
Halo 4 Prologue - Location Unknown | The Sequence Group |
| 2555 CE | Halo Online | Saber Interactive |
| 2555 CE | Halo: Hunters in the Dark | Peter David |
| 2555 CE | Halo: New Blood | Matt Forback |
| 2556 CE | Halo: Nightfall | |
| 2556 CE | Origins | Studio 4˚C |
| 2557 CE | Halo 4 | 343 Industries |
| 2557 CE | Halo: Escalation -The Next 72 Hours | Brian Reed |
| 2557 CE | Halo: Spartan Assault | Vanguard Games |
| 2557 CE | Halo: Spartan Strike | Vanguard Games |
| 2558 CE | Halo: Saint's Testimony | Frank O'Connor |
| 2558 CE | Spartan Ops | 343 Industries |
| 2558 CE | Halo: Escalation (issues 1-6) | Christopher Schlerf |
| 2558 CE | Halo: Escalation (issue 7) | Brian Reed |
| 2558 CE | Hunt the Truth Season 1 | |
| 2558 CE | Halo: Escalation - Exposure | Duffy Boudreau |
| 2558 CE | Halo: Escalation - The Janus Key | Duffy Boudreau |
| 2558 CE | Halo: Escalation - The Absolute Record | Duffy Boudreau |
| 2558 CE | Hunt the Truth Season 2 | |
| 2558 CE | Halo 5: Guardians | 343 Industries |
| 2559 CE | The Return | Kevin Grace |