Wolf's Honour is the sixth and last novel in the Space Wolf novel series. Written by Lee Lightner, it was first published in 2005.
For ten thousand years, the Thousand Sons have sought revenge upon the Space Wolves for the destruction of their home world of Prospero. Now, the time may have come for their final victory. When the Chapter comes under attack, it falls to Ragnar Blackmane and his brothers to launch a lightning strike on the Thousand Sons in a last ditch attempt to stop their ruinous plans. With the aid of brothers long thought lost, Ragnar seeks to retrieve the Spear of Russ, and not only save the day, but regain his honour. But his nemesis, the sorceror Madox, has claimed the spear and stand between the Young Wolf and his victory.