Theo Lindstein (born 5 January 2005) is a Swedish professional ice hockey player who is a defenceman for the St. Louis Blues of the National Hockey League (NHL). Lindstein was drafted 29th overall by the Blues in the 2023 NHL entry draft.
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Playing career
Lindstein's professional career began in the 2021–22 season with Brynäs IF in the Swedish Hockey League (SHL). Lindstein appeared in 12 games, in which he scored one point, which was an assist. In the 2022–23 season, He appeared in 32 games and doubled his points, scoring one goal and an assist for two points. He was signed to a one-year extension with Brynäs on 14 April 2023, opted to remain with the relegated club to the HockeyAllsvenskan for the following season.
The following season Lindstein appeared in 49 regular season HockeyAllsvenskan games, scoring 15 points, and then all 13 playoff games, scoring four points as Brynäs earned promotion back to the SHL. He was signed to a three-year, entry-level contract with draft club, the St. Louis Blues, on 21 March 2024. On 9 March 2026, Lindstein was recalled from the Springfield Thunderbirds of the American Hockey League (AHL), and he made his NHL debut the next day. On 30 March 2026, in his 10th NHL game, Lindstein scored his first career NHL goal in a 5–4 loss against the San Jose Sharks.
International play
Lindstein represented Sweden at the 2024 World Junior Championships and won a silver medal.