Portland Lumberjax is a professional lacrosse team in the National Lacrosse League which started playing in the 2006 season.
The NLL announced on May 11, 2005, that starting the 2006 season, Portland, Oregon would receive a franchise. They will play their home games at the Rose Garden Arena. The Portland team is owned by Angela Batinovich, who at the age of 24 has entered the league as the youngest owner of a professional sports franchise.
The team's name and logo was announced on July 12, 2005, from among three finalists:
- Portland Lumberjax
- Portland Shadow
- Portland Fear
The head coach and general manager for the Lumberjax was announced as Derek Keenan on July 7, 2005.
The first player selected to the Lumberjax during the 2005 expansion draft was former Buffalo Bandits Forward Mike Hominuck.