It: Chapter One2017
Releasedata · 99
| 5 september 2017 | United States of America | PremièreLos Angeles | R |
| 6 september 2017 | Belgium | PremièreKinepolis | 18 |
| 6 september 2017 | Germany | PremièreFantasy Filmfest | |
| 6 september 2017 | Indonesia | Bioscoop | 17+ |
| 6 september 2017 | South Korea | Bioscoop | 15 |
| 7 september 2017 | United Arab Emirates | Bioscoop | |
| 7 september 2017 | Armenia | Bioscoop | |
| 7 september 2017 | Australia | Bioscoop | MA15+ |
| 7 september 2017 | Brazil | Bioscoop | 16 |
| 7 september 2017 | Colombia | Bioscoop | |
| 7 september 2017 | Cyprus | Bioscoop | |
| 7 september 2017 | Czech Republic | Bioscoop | 15+ |
| 7 september 2017 | Denmark | Bioscoop | 15 |
| 7 september 2017 | Georgia | Bioscoop | |
| 7 september 2017 | Hong Kong | Bioscoop | IIB |
| 7 september 2017 | Croatia | Bioscoop | |
| 7 september 2017 | Hungary | Bioscoop | 18 |
| 7 september 2017 | Israel | Bioscoop | 16 |
| 7 september 2017 | Kuwait | Bioscoop | |
| 7 september 2017 | Kazakhstan | Bioscoop | |
| 7 september 2017 | Lebanon | Bioscoop | |
| 7 september 2017 | Malaysia | Bioscoop | |
| 7 september 2017 | Netherlands | Bioscoop | 16 |
| 7 september 2017 | New Zealand | Bioscoop | R16 |
| 7 september 2017 | Panama | Bioscoop | |
| 7 september 2017 | Peru | Bioscoop | |
| 7 september 2017 | Philippines | Bioscoop | R-13 |
| 7 september 2017 | Serbia | Bioscoop | |
| 7 september 2017 | Russia | Bioscoop | 18+ |
| 7 september 2017 | Singapore | Bioscoop | NC16 |
| 7 september 2017 | Slovenia | Bioscoop | |
| 7 september 2017 | Slovakia | Bioscoop | 15 |
| 7 september 2017 | Thailand | Bioscoop | 15 |
| 7 september 2017 | Taiwan | Bioscoop | 輔15 |
| 7 september 2017 | Ukraine | Bioscoop | |
| 7 september 2017 | Uzbekistan | Bioscoop | |
| 8 september 2017 | Bulgaria | Bioscoop | |
| 8 september 2017 | Bahamas | Bioscoop | |
| 8 september 2017 | Canada | Bioscoopmovie score rate is M | 18A |
| 8 september 2017 | Estonia | Bioscoop | |
| 8 september 2017 | Spain | Bioscoop | 16 |
| 8 september 2017 | Finland | Bioscoop | K-16 |
| 8 september 2017 | United Kingdom | Bioscoop | 15 |
| 8 september 2017 | Ireland | Bioscoop | 16 |
| 8 september 2017 | India | Bioscoop | A |
| 8 september 2017 | Iceland | Bioscoop | |
| 8 september 2017 | Cambodia | Bioscoop | |
| 8 september 2017 | Lithuania | Bioscoop | N-16 |
| 8 september 2017 | Latvia | Bioscoop | |
| 8 september 2017 | Malta | Bioscoop | |
| 8 september 2017 | Mexico | Bioscoop | B-15 |
| 8 september 2017 | Norway | Bioscoop | 15 |
| 8 september 2017 | Poland | Bioscoop | 18 |
| 8 september 2017 | Romania | Bioscoop | 15 |
| 8 september 2017 | United States of America | Bioscoop | R |
| 8 september 2017 | Vietnam | Bioscoop | |
| 9 september 2017 | France | PremièreDeauville Film Festival | |
| 10 september 2017 | Portugal | PremièreMOTELX - Lisbon International Horror Film Festival | M/16 |
| 13 september 2017 | Chile | Bioscoop | |
| 13 september 2017 | Sweden | Bioscoop | 15 |
| 14 september 2017 | Bolivia | Bioscoop | |
| 14 september 2017 | Portugal | Bioscoop | M/16 |
| 14 september 2017 | Uruguay | Bioscoop | |
| 15 september 2017 | France | Beperkte bioscoopreleaseParis | |
| 15 september 2017 | Turkey | Bioscoop | 15+ |
| 15 september 2017 | Venezuela | Bioscoop | |
| 15 september 2017 | South Africa | Bioscoop | 16 |
| 17 september 2017 | Japan | PremièreDown Town Taito International Comedy Film Festival | |
| 19 september 2017 | Argentina | PremièreBuenos Aires | |
| 20 september 2017 | Switzerland | Bioscoop | 16 |
| 20 september 2017 | France | Bioscoop | 12 |
| 20 september 2017 | Luxembourg | Bioscoop | |
| 21 september 2017 | Argentina | Bioscoop | +16 |
| 21 september 2017 | Kyrgyz Republic | Bioscoop | |
| 28 september 2017 | Switzerland | Bioscoop | 16 |
| 28 september 2017 | Germany | Bioscoop | 16 |
| 28 september 2017 | Greece | Bioscoop | |
| 29 september 2017 | Austria | Bioscoop | |
| 19 oktober 2017 | Switzerland | Bioscoop | 16 |
| 19 oktober 2017 | Italy | Bioscoop | VM14 |
| 3 november 2017 | Japan | Bioscoop | R15+ |
| 19 december 2017 | Brazil | Digitaal | 16 |
| 19 december 2017 | United States of America | Digitaal | R |
| 9 januari 2018 | United States of America | FysiekDVD / Blu-ray | R |
| 10 januari 2018 | Hungary | FysiekDVD / Blu-ray | 18 |
| 17 januari 2018 | Czech Republic | FysiekDVD / Blu-ray | 15+ |
| 20 januari 2018 | France | Digitaal | |
| 22 januari 2018 | Sweden | Fysiek | 15 |
| 24 januari 2018 | France | FysiekDVD / Blu-ray / 4K UHD | 12 |
| 24 januari 2018 | Netherlands | FysiekDVD / Blu-ray | 16 |
| 22 februari 2018 | Germany | Fysiek | 16 |
| 12 oktober 2018 | Mexico | Beperkte bioscoopreleaseRe-release | C |
| 15 oktober 2018 | United Kingdom | Digitaal | |
| 15 oktober 2018 | United Kingdom | Fysiek | |
| 23 augustus 2019 | United Kingdom | BioscoopRe-release | |
| 30 augustus 2019 | Vietnam | BioscoopRe-release | |
| 5 september 2019 | Spain | DigitaalRe-release | 16 |
| 15 juni 2021 | France | DigitaalNetflix | |
| 1 juli 2022 | France | DigitaalPrime Video | 18 |