Florian Kainz

In July 2014, after more than a decade with Sturm Graz, Graz native Kainz transferred to Rapid Wien for an undisclosed fee. He signed for Rapid until summer 2017. In June 2016, Kainz joined Werder Bremen on a four-year contract for a reported €3.5 million transfer fee. On 18 March 2017, he scored his first goal for the club in a 3–0 win against Leipzig. Having been introduced as a substitute in the 88th minute he found the net two minutes later in a match that saw all three of Werder Bremen's Austrian players score in the club's highest win of the season. Two matches later he assisted the last goal in Werder Bremen's 5–2 away victory against Freiburg via free kick, after being brought onto the pitch in the 76th minute. In the first match of the 2018–19 season, a 6–1 win against Wormatia Worms in the first round of the DFB-Pokal, Kainz assisted the first goal and scored the second in a "Man of the Match" performance. In January 2019, Kainz joined 1. FC Köln on a three-and-a-half-year contract. The transfer fee paid to Werder Bremen was reported as €3 million. In March 2022, he signed a new contract until 2024. In January 2023, he extended his contract until 2025. He became club's captain ahead of the 2023–24 season, following Jonas Hector's retirement. In March 2026, Kainz announced that he would end his professional career at the end of the 2025–26 season. On 16 May 2026, Kainz played his last professional match against Bayern Munich.

In November 2015, Kainz debuted for the Austrian senior squad during a friendly match against Switzerland, coming as a substitute. He scored his first and only goal in a UEFA Euro 2024 qualifying against Estonia.

Club

International

Scores and results list Austria's goal tally first, score column indicates score after each Kainz goal.

1.FC Koln

2.Bundesliga: 2024–25 Individual

Austrian Bundesliga top assist provider: 2015–16