Ralph Douglas Charles "Challe" Berglund (born 18 January 1965 in Stockholm, Sweden) is a Swedish former ice hockey player and coach.

[2][3][4] On 12 May 2011, Berglund said in an interview that he would take a one-year break from coaching, after declining an offer from IF Sundsvall Hockey.

[5] On 6 August 2011, Berglund signed with the sports channel Viasat Hockey as a color commentator for HockeyAllsvenskan and Kvalserien.

[7] As a result, Djurgården called Berglund up as the team's new head coach to help save them in the highest division.

[9] However, after weak results Berglund stepped down as head coach in November 2012, remaining as General Manager for two more years until August 2014.