Was picked up by CBS after being dropped by NBC for low ratings. It became a success soon afterwards.
The location for Admiral Chegwidden's house is the Peter Strauss Ranch, operated by the National Park Service in the beautiful Santa Monica Mountains National Recreation Area in Southern California, once owned by actor Peter Strauss, which was later destroyed in the Woolsey fire in 2018.
During the last half of season eight, Catherine Bell was shown mostly behind a desk, or holding something in front of her, because she was pregnant. Her character pretended to be pregnant during the last couple of episodes of the eighth season, then threw away the padding during the season nine premiere, because Bell had given birth during the summer hiatus.
While Rabb and Lieutenant Loren Singer were at odds with each other in the show, in real life, they are a couple having married in 1992.
David James Elliott (Harmon Rabb, Jr.) appears in every episode of JAG, either as himself, as another character in a flashback, or via voice by phone. He is the only regular cast member to appear in all episodes.