Tainan City

Tainan City Football Club was established with the support of the Tainan City Government and the Football Committee of the Tainan City Sports Federation, Hongxin Enterprise and Taiwan Steel Group. The team joined the Taiwan Football Premier League, under the name Tainan City in 2017, which most of the players came from Tianmu Campus, University of Taipei. Tainan City structure and its players changed, since Taiwan Steel Group acquired the club and renamed it as Tainan City Taiwan Steel in 2019, importing national team players such as Wu Chun-ching.

2019 to present - as Tainan City Taiwan Steel

Ahead of the 2020 season, Tainan City added national team players like Pan Wen-chieh, Chen Wei-chuan, 2019 'Best Player' award winner Marc Fenelus, and 2019 'Golden Boot' award winner Benchy Estama. Tainan City went on to win the 2020 season league title, receiving the club's first major piece of silverware and direct qualification to the 2021 AFC Cup.

Tainan City won the league title in the next three seasons, becoming the first Taiwanese club to win four consecutive times.

Performance in Asian competitions

At the 2021 AFC Cup, Tainan City won their first ever AFC Cup match against Mongolian club Athletic 220, ultimately finishing third in the group and exiting the tournament.

In the inaugural 2024–25 AFC Challenge League they came second in their group, including a win against Laotian team Young Elephants. At the quarter-finals stage in March 2025, they faced off against Indonesian club Madura United and lost.