Donald Thomas Lutz III (born February 6, 1989) is an American-German former professional baseball first baseman / leftfielder.

Despite starting his baseball career in his teenage years, and in Germany, Lutz first visited Cincinnati's spring training camp, reached Double–A and was placed on the Reds' 40-man roster in 2012.

Within another few years, he became a member of the Germany national baseball team and traveled to Europe-wide training camps, which finally led to his signing with the Cincinnati Reds on July 15, 2007.

In his third season Lutz remained in the Rookie level but was transferred to the Billings Mustangs from the Pioneer League, where he had a .286 BA as well as 7 home runs and 28 RBI.

After an impressive 2011 season for the single-A Dayton Dragons with a .301 BA and 20 home runs and the team's first cycle, Lutz was promoted to the Reds' 40-man roster in 2012 and participated in 15 Spring training games.

Although playing in the Arizona Fall League and a second spring training with the Reds, Lutz started the 2013 season in Pensacola but remained on the 40-man roster.

[2] On May 5, against Shawn Camp of the Chicago Cubs, Lutz got his first MLB hit when he lined a ball into center field.

Lutz hit his first career home run on May 12, a three-run homer off Brewers pitcher Wily Peralta.

[9] He had a relatively lean season, slashing .186/.312/.310, but was key in Brisbane's postseason run, going 4/10 with three homeruns to help the Bandits to their fourth successive championship.