|Born||May 19, 1990|
|Curling club||Duluth CC, |
|4 (2015, 2016, 2017, 2019)|
|2 (2014, 2018)|
Landsteiner was a prolific junior curler, playing in the United States Junior Curling Championships 6 times, every year from 2007 through 2011. His best finish was 2010 when his team earned the silver medal. In 2011 Landsteiner participated at the World Junior Championships as alternate for the American team.
Since 2012 Landsteiner has played lead for John Shuster's team. With this team Landsteiner has played in seven US National Championships, only missing one year, 2018, because of obligations after the Olympics. Of the seven appearances at the National Championship, Team Shuster earned a medal six times, including gold in 2015, 2017, and 2019.
Landsteiner's team placed first at the 2013 United States Olympic Curling Trials, then earned the final qualification spot for the 2014 Olympics at the qualification event when they won the second qualifier 8–5 over the Czech Republic. At the Winter Games the American men finished 9th out of 10 teams, with a record of 2-7.
After the 2014 Olympics, Landsteiner and Team Shuster continued to represent the United States at the highest levels of international competition, competing in three consecutive World Championships. Their best finish was in 2016, when they defeated Japan 8-6 to win the bronze medal.
At the 2017 United States Olympic Curling Trials Landsteiner and his team beat Heath McCormick's team in a best-of-three final series to represent the US at the Olympics a second time. At the 2018 Winter Olympics Team Shuster finished round robin in 3rd place with a record of 5-4. They defeated Team Koe from Canada in the semifinals 5-3. In the finals they played Niklas Edin and Team Sweden, the Americans winning 10-7 in 9 ends. This was the first Olympic gold medal in curling for the United States.
|2011–12||John Shuster||Zach Jacobson||Jared Zezel||John Landsteiner||2012 USNCC |
|2012–13||John Shuster||Jeff Isaacson||Jared Zezel||John Landsteiner||2013 USNCC |
|2013–14||John Shuster||Jeff Isaacson||Jared Zezel||John Landsteiner||2013 USOCT |
2014 USNCC (5th)
2014 OG (9th)
|2014–15||John Shuster||Tyler George||Matt Hamilton||John Landsteiner||2015 USNCC |
2015 WCC (5th)
|2015–16||John Shuster||Tyler George||Matt Hamilton||John Landsteiner||2016 USNCC |
|2016–17||John Shuster||Tyler George||Matt Hamilton||John Landsteiner||2017 USNCC |
2017 WCC (4th)
|2017–18||John Shuster||Tyler George||Matt Hamilton||John Landsteiner||2017 USOCT |
|2018–19||John Shuster||Chris Plys||Matt Hamilton||John Landsteiner||2019 USNCC |
2019 WCC (5th)
|2019–20||John Shuster||Chris Plys||Matt Hamilton||John Landsteiner|
- "John Landsteiner". Team USA. Retrieved 2019-05-14.
- "World Junior Curling Championships 2011: Tournament details". results.worldcurling.org. Retrieved 2019-05-14.
- "XXII. Olympic Winter Games 2014: Tournament details". results.worldcurling.org. Retrieved 2019-05-15.
- "John Landsteiner". World Curling Federation. Retrieved 2019-05-15.
- "World Men's Curling Championship 2016: Tournament details". results.worldcurling.org. Retrieved 2019-05-15.
- "XXIII. Olympic Winter Games 2018: Tournament details". results.worldcurling.org. Retrieved 2019-05-15.
- "Shuster claims seventh national title as he leads team in Kalamazoo". Team USA. Retrieved 2019-05-15.
- "Pioneer Hi-Bred World Men's Curling Championship 2019: Tournament details". results.worldcurling.org. Retrieved 2019-05-15.
- 2018 Continental Cup Media Guide
- 2017 Ford Worlds Media Guide: Team USA
- John Landsteiner - Team USA profile
- John Landsteiner on the World Curling Federation database
- John Landsteiner at the International Olympic Committee
- John Landsteiner at the United States Olympic Committee
- John Landsteiner on the World Curling Tour database
- John Landsteiner on the CurlingZone database