On 1 July 2013, Moritz Leitner joined VfB Stuttgart on loan until June 2015.

He made his Stuttgart debut in their first game of the Bundesliga season in a 3–2 loss against Mainz 05.
He suffered a knee injury in training in September 2013.
He returned to the first team on 1 November 2013, playing against his parent club in a 6–1 loss.
On 1 February 2014, Leitner scored his first Bundesliga goal in Stuttgart's 2–1 defeat to Bayer Leverkusen.
He was sent off for a second bookable offence in a 4–1 loss against 1899 Hoffenheim on 15 February 2014.
Having suffered injuries throughout the season, Leitner finished his first season with Stuttgart with 24 appearances and one goal in all competitions.

In his second season at Stuttgart, Leitner continued to be a first team regular.
He scored his first goal of the season in a 3–2 loss against Hertha BSC on 3 October 2014.
During a 3–3 draw against Bayer 04 Leverkusen on 18 October 2014, Leitner suffered a thigh injury and was sidelined as a result.
As the 2014–15 season progressed, his first team opportunities came under threat when he fell out with manager Huub Stevens, resulting in Leitner being dropped from the first team.
Leitner was also demoted to the reserve side for the rest of the season.
He made 20 appearances and scored once in all competitions.

Just before the end of the season, it was announced that Leitner would return to his parent club when the 2014–15 season ended.
On 1 July 2013, Moritz Leitner joined VfB Stuttgart on loan until June 2015.
He made his Stuttgart debut in their first game of the Bundesliga season in a 3–2 loss against Mainz 05. He suffered a knee injury in training in September 2013. He returned to the first team on 1 November 2013, playing against his parent club in a 6–1 loss. On 1 February 2014, Leitner scored his first Bundesliga goal in Stuttgart's 2–1 defeat to Bayer Leverkusen. He was sent off for a second bookable offence in a 4–1 loss against 1899 Hoffenheim on 15 February 2014. Having suffered injuries throughout the season, Leitner finished his first season with Stuttgart with 24 appearances and one goal in all competitions.
In his second season at Stuttgart, Leitner continued to be a first team regular. He scored his first goal of the season in a 3–2 loss against Hertha BSC on 3 October 2014. During a 3–3 draw against Bayer 04 Leverkusen on 18 October 2014, Leitner suffered a thigh injury and was sidelined as a result. As the 2014–15 season progressed, his first team opportunities came under threat when he fell out with manager Huub Stevens, resulting in Leitner being dropped from the first team. Leitner was also demoted to the reserve side for the rest of the season. He made 20 appearances and scored once in all competitions.
Just before the end of the season, it was announced that Leitner would return to his parent club when the 2014–15 season ended.
Moritz Leitner