Douglas "Doug" Drexler was a Starfleet officer in the 24th century.
In 2328, the SS Kogin ferried him from Gamma Trianguli VI to Gothos Space Center. His passenger manifest was accessed by Lieutenant Commander Data aboard the USS Enterprise-D in 2370 by reviewing this data in the commercial transport database. (TNG: "Inheritance", okudagram)
He was a captain in the 2360s. He was the commander of the USS Mare Tranquillitatis. He was mentioned in the Personnel Status Report of Lieutenant Keith G. Rocha. (TNG: "Aquiel", okudagram)
In 2372, he was listed as a Systems Management officer on the dedication plaque of the USS Enterprise-E. (Star Trek: First Contact, dedication plaque)
In the 2370s, he was among the members of the Science Ops team listed on the dedication plaques of Defiant-class starships. (DS9: "Valiant", dedication plaque; DS9: "The Dogs of War", dedication plaque)
In 2401, he was listed as a member of the Admiralty Board on the dedication plaques of the USS Stargazer, USS Titan-A, and USS Enterprise-G. (PIC: "The Star Gazer", "The Next Generation", "The Last Generation")