Thomas Johanson (born 3 June 1969 in Helsinki) is a Finnish sailor and Olympic champion.
He won a gold medal in the 49er Class with Jyrki Järvi at the 2000 Summer Olympics in Sydney.
In 2008–2009, he was a crewmember on yacht Ericsson 3 and in 2011-12 on yacht PUMA Ocean Racing in the Volvo Ocean Race.