Carl Stefan Ridderwall (born 5 March 1988) is a Swedish former professional ice hockey goaltender. He last played with EC Kitzbühel of the Alps Hockey League (AlpsHL).
He began his career in the 2003âÂÂ04 season with Huddinge IK in the J18 Allsvenskan. The following season he joined league rival DjurgÃÂ¥rdens IF. During the winter 2005, he was promoted to DjurgÃÂ¥rden's J20 team in J20 SuperElit. Ridderwall made his Elitserien debut the following season, but only played one game during the 2005âÂÂ06 season. Ridderwall was drafted in the sixth round of the 2006 NHL Entry Draft, 173rd overall, by the New York Islanders.
Ridderwall did not play in Elitserien during the 2006âÂÂ07 season, and spent the season playing in DjurgÃÂ¥rden's J20 team. The following season, Ridderwall was DjurgÃÂ¥rden's second goaltender behind Daniel Larsson, and played 11 games in Elitserien. He also spent some time on loan to Allsvenskan teams IK Nyköpings NH 90 and Almtuna IS. During the 2008âÂÂ09 season, Ridderwall became the first-choice goaltender in the senior team, and played 27 games out of 55 during the regular season. For the 2009âÂÂ10 season, Ridderwall shares the first-choice position with Gustaf Wesslau.
In the 2013âÂÂ14 season, Ridderwall signed for his first venture abroad, agreeing to a one-year deal with Düsseldorfer EG in the Deutsche Eishockey Liga.
He is the son of former goaltender Rolf Ridderwall. Ridderwall has been awarded "goaltender of the tournament" twice on the national junior tournament TV-pucken.