Crowley has agreed to a one-year contract extension that will see the 29-year-old commit to the Dockers until the end of 2015.
Crowley has played 164 games for Fremantle since being recruited from the Calder Cannons in 2002.
The tagger had a standout year in 2012, when he was awarded the Doig Medal. In 2013, Crowley did not miss a beat, playing in all 25 games.
Heading into this third season at Fremantle, midfielder Lachie Neale has signed a two-year contract extension that will take him through to the end of season 2016.
The 20-year-old was selected at pick 58 in the 2011 national draft. The South Australian cemented his spot in Freo's side toward the end of season 2013.
In his two seasons at Fremantle, Neale has played 23 games.