The Big Black Mark (1975) is a science fiction novel by Australian writer A. Bertram Chandler.

[1] It forms part of the author's Rim World series, featuring the recurring character, John Grimes.

Unfortunately, hope is dashed when they mutiny against Grimes's command and cast him adrift in space.

Spider Robinson, reviewing the novel on its original release in Galaxy magazine noted: "Black Mark borrows just a bit too heavily from both Nordhoff & Hall and Herman Wouk, if you get my galactic drift.

True-blue Grimes fans should be satisfied, but I found it pat in spots, contrived in others, and a little too reminiscent of some of the worst Star Trek episodes.