2023 T1 League playoffs

The 2023 T1 League playoffs was the postseason tournament of the T1 League's 2022–23 season. The play-in series started on April 25 and ended on April 27. The semifinals series started on April 28 and ended on May 8. The finals series started on May 13 and ended on May 21. On May 21, the New Taipei CTBC DEA defeated the Tainan TSG GhostHawks, 4–0, winning the 2022–23 season championship.

Format
Five teams will participate in the playoffs. The top three teams, based on winning percentage of regular season, directly qualify for the semifinals. The fourth and fifth seeds play the best-of-three play-in series, which is in a 1-1 format. The fourth seed will be awarded a one-win advantage. The winner of play-in series and the top three seeds play the best-of-five semifinals series, which is in a 2-2-1 format. The winners of the semifinals series play the best-of-seven finals series, which is in a 2-2-1-1-1 format. Due to the schedule of the Xinzhuang Gymnasium, the semifinals series between the New Taipei CTBC DEA and the winner of play-in series changed to a 1-1-1-1-1 format.

Playoff qualifying
On March 19, 2023, the New Taipei CTBC DEA became the first team to clinch the semifinals series. On April 3, the New Taipei CTBC DEA clinched the regular season title. On April 9, the Taichung Suns became the first team to qualify the play-in series. On April 16, the Kaohsiung Aquas became the final team to secure a direct berth in the semifinals bracket, qualifying as the third seed and relegating the TaiwanBeer HeroBears to the play-in series. On April 27, the Taichung Suns won the play-in series and advanced to the semifinals bracket.

Bracket
Bold Series winner Italic Team with home-court advantage

Play-in: (4) TaiwanBeer HeroBears vs. (5) Taichung Suns
This was the first playoff meeting between these two teams.

(1) New Taipei CTBC DEA vs. (5) Taichung Suns
This was the second playoff meeting between these two teams, but the first since the Taichung Wagor Suns renamed to the Taichung Suns in 2022, with the Suns winning the first meeting.

(2) Tainan TSG GhostHawks vs. (3) Kaohsiung Aquas
This was the first playoff meeting between these two teams.

T1 League Finals: (1) New Taipei CTBC DEA vs. (2) Tainan TSG GhostHawks
This was the first playoff meeting between these two teams.