Bo Kristoffer Nordfeldt (born 23 June 1989) is a Swedish professional footballer who plays as a goalkeeper for Turkish club Genclerbirligi and the Swedish national team.

On 23 June 2015, Nordfeldt signed for Premier League side Swansea City on a three-year-deal for an undisclosed fee. He was signed to compete with Łukasz Fabianski for the starting position, following the departures of goalkeepers Gerhard Tremmel and David Cornell earlier in that transfer window. Nordfeldt made his Swansea City debut on Tuesday 25 August in their League Cup match against York City where he played the full 90 minutes in a 3–0 win which resulted in his first clean sheet for the club. Nordfeldt made his Premier League debut in the last match of the season against Manchester City.

Between 2008 and 2010, Nordfeldt played 16 matches for the Swedish U21-team. In the race for the 2011 U21 European Championships, Sweden played 8 matches in their qualification group and 2 in the play-offs, all with Nordfeldt in the starting lineup, with a goal difference of 17–10.

Nordfeldt made his debut for Sweden on 22 January 2011 in a friendly match against South Africa Development team.

In May 2018, he was named in Sweden's 23 man squad for the 2018 FIFA World Cup in Russia.

Nordfeldt was included in Sweden's 26-man squad for UEFA Euro 2020.