The Sea Wolf is a lost[1] 1913 American silent adventure film directed by and starring Hobart Bosworth and co-starring Herbert Rawlinson.

[2][3] Based on the 1904 Jack London novel The Sea-Wolf, the production's master negatives were destroyed in the disastrous 1914 vault fire at the Lubin Manufacturing Company, the Philadelphia-based film company that Bosworth contracted to produce theatrical prints of his screen adaptation.

Bosworth previously made a one reel version of the story at Selig directed by Sidney Ayres.

The Balboa company also made a competing version and was sued by author Jack London who had it removed from theatres.

[5] Bosworth formed his own company, hired Jack London himself as a cast member, and made this 7 reel version.