James J. Griffin (born 1949) is the author of the Texas Ranger Jim Blawcyzk series of western novels. The Blawcyzk stories are traditional Westerns.
James J. Griffin himself is a lifelong horseman, Western enthusiast, and amateur historian of the Texas Rangers. Griffin has travelled extensively throughout the Western United States. He has contributed an extensive collection of Texas Ranger artifacts to the Texas Ranger Hall of Fame and Museum in Waco, Texas. A member of the Connecticut Volunteer Horse Patrol, Griffin currently makes his home in New England.