| World Championships – Men – Results | 2023 |  | 11–29 January |
| ATP Tour – Grand Slam – Australian Open | 2023 | | 16–29 January |
| World Championships – Men – Two-man | 2023 | | 28–29 January |
| World Championships – Mixed – Team relay | 2023 | | 29 January |
| World Championships – Men – Singles | 2023 | | 29 January |
| NFL – Championships – Super Bowl – Results (NFC Championship) | 2023 | | 29 January |
| World Championships – Women – Monobob | 2023 | | 28–29 January |
| ATP Tour – Grand Slam – Australian Open (Final) | 2023 | | 29 January |
| NFL – Championships – Super Bowl – Results (AFC Championship) | 2023 | | 29 January |
| World Championships – Women – Doubles | 2023 | | 28 January |
| WTA Tour – Grand Slam – Australian Open (Final) | 2023 | | 28 January |
| World Championships – Men – Doubles | 2023 | | 28 January |
| World Championships – Women – Singles | 2023 | | 28 January |
| WTA Tour – Grand Slam – Australian Open | 2023 | | 16–28 January |
| World Championships – Men – Sprint | 2023 | | 27 January |
| ATP Tour – Grand Slam – Australian Open (Semifinal #2) | 2023 | | 27 January |
| ATP Tour – Grand Slam – Australian Open (Semifinal #1) | 2023 | | 27 January |
| World Championships – Women – Sprint | 2023 | | 27 January |
| World Championships – Men – Sprint, doubles | 2023 | | 27 January |
| World Championships – Women – Sprint, doubles | 2023 | | 27 January |
| WTA Tour – Grand Slam – Australian Open (Semifinal #1) | 2023 | | 26 January |
| WTA Tour – Grand Slam – Australian Open (Semifinal #2) | 2023 | | 26 January |
| ATP Tour – Grand Slam – Australian Open (Quarterfinal #4) | 2023 | | 25 January |
| ATP Tour – Grand Slam – Australian Open (Quarterfinal #3) | 2023 | | 25 January |
| ATP Tour – Grand Slam – Australian Open (Quarterfinal #2) | 2023 | | 25 January |
| ATP Tour – Grand Slam – Australian Open (Quarterfinal #1) | 2023 | | 25 January |
| WTA Tour – Grand Slam – Australian Open (Quarterfinal #2) | 2023 | | 24 January |
| WTA Tour – Grand Slam – Australian Open (Quarterfinal #3) | 2023 | | 24 January |
| WTA Tour – Grand Slam – Australian Open (Quarterfinal #4) | 2023 | | 24 January |
| WTA Tour – Grand Slam – Australian Open (Quarterfinal #1) | 2023 | | 24 January |
| NFL – Championships – Super Bowl – Results (AFC Divisional #1) | 2023 | | 22 January |
| Honbasho – Hatsu Basho (January) | 2023 | | 8–22 January |
| World Rally Championship (WRC) – Rallies – Rally Monte-Carlo | 2023 | | 19–22 January |
| NFL – Championships – Super Bowl – Results (NFC Divisional #1) | 2023 | | 22 January |
| NFL – Championships – Super Bowl – Results (NFC Divisional #2) | 2023 | | 21 January |
| NFL – Championships – Super Bowl – Results (AFC Divisional #2) | 2023 | | 21 January |
| Ultimate Fighting Championship – Men – Light-heavyweight | 2023 | | 21 January |
| Ultimate Fighting Championship – Men – Flyweight | 2023 | | 21 January |
| NFL – Championships – Super Bowl – Results (NFC Wild Card) | 2023 | | 16 January |
Past events
