Travis Lee Hafner (pronounced /ˈhæfnər/; born June 3, 1977) is a left-handed hitting designated hitter for the Cleveland Indians of the American League Central Division. He attended Cowley County Community College in Arkansas City, Kansas. His nickname, "Pronk", was given to him by former teammate Bill Selby during spring training of 2001 when people would sometimes refer to him as "The Project" and other times "Donkey" for the way he looked when running the bases.

Hafner was drafted by the Texas Rangers in the 31st round of the 1996 draft. In the winter of 2002, the Rangers traded him to the Indians along with Aaron Myette for catcher Einar Diaz and right-handed pitcher Ryan Drese. Hafner enjoyed moderate success with the Indians in 2003, splitting time between first base and designated hitter. On August 14, he hit for the cycle in Minnesota, the first Indian to accomplish the feat since Andre Thornton in 1978.

In 2004, Hafner had a breakout offensive season. As the primary DH in the Indians line-up, he finished the season in the top ten in the league in on-base percentage (.410, 3rd), slugging percentage (.583, 4th), doubles (41, 6th), extra base hits (72, 7th), RBI (109, 9th) and batting average (.311, 10th). He also hit 28 home runs (16th in the AL) and scored 96 runs (20th in the AL). He topped the .300 mark in batting average each month of the season except August–when he hit a respectable .274–and was particularly hot in July, hitting .360 with 8 home runs and 28 RBI. He hit his first career grand slam in the Indians' home opener on April 12 against Kyle Lohse of the Minnesota Twins.