Allen Lee Davis (July 20, 1944 – July 8, 1999) was an American mass murderer executed for the May 11, 1982, murder of Nancy Weiler, who was three months pregnant, in Jacksonville, Florida. According to reports, Nancy Weiler was "beaten almost beyond recognition" by Davis with a .357 Magnum, and hit more than 25 times in the face and head. He was also convicted of killing Nancy Weiler's two daughters, Kristina, age 10, who was shot twice in the face, and Katherine, age 5, who was shot as she tried to run away and then had her skull beaten in with the gun.