Derek Joslin (born March 17, 1987) is a Canadian professional ice hockey defenceman who is currently playing with EC Red Bull Salzburg of the Austrian Hockey League (EBEL). He has played in the National Hockey League for the San Jose Sharks, with his NHL debut coming during the 2008-09 campaign, Carolina Hurricanes and the Vancouver Canucks. The Sharks drafted him in the 149th overall in the 2005 NHL Entry Draft. Joslin played major junior hockey in the Ontario Hockey League (OHL) for the Ottawa 67's. During his time in the OHL he was an All-Star and represented Canada in the Subway Super Series. After finishing his OHL career he played in the American Hockey League (AHL) for the Worcester Sharks, where he was also an All-Star.