|Date of birth||29 August 1977|
|Place of birth||Munich, West Germany|
|Height||1.78 m (5 ft 10 in)|
|Playing position||Central Midfielder|
|1995–1998||Bayern Munich (A)||26||(2)|
|1999–2002||1. FC Nuremberg||57||(4)|
|2007–2013||FC Ingolstadt 04||182||(43)|
|* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
Leitl played as a youth for FC Ismaning, before joining the youth setup of Bayern Munich in 1987. He left the club to join SpVgg Unterhaching, but returned, and began playing for the reserve team in 1995. A year later he was promoted to the senior squad, but did not make any first-team appearances, continuing to play for the reserves in the Regionalliga Süd. In 1998, he left FC Bayern, joining local amateur side SV Lohhof, with whom he won the Oberliga Bayern, securing promotion to the Regionalliga. He left, however, joining 1. FC Nuremberg, then of the 2. Bundesliga.
After two years Nuremberg were promoted to the Bundesliga as champions, where Leitl found his opportunities limited – after just five appearances he left the club half-way through the 2001–02 season, dropping back down a division to return to Unterhaching. He could not prevent them being relegated down to the Regionalliga, but played in 33 of 36 games the following season as they won the title, finishing ahead of Jahn Regensburg on goals scored. Leitl had now been a champion at the top four levels of German football.
The following season Leitl had lost his place, and only played 13 games, mostly as a substitute. He left the club in July 2004, joining Darmstadt, where he spent three seasons in the Regionalliga, leaving in 2007 after the club were relegated. He returned to Bavaria to sign for FC Ingolstadt 04, where he established himself as a key player, captaining the club to promotion as league runners-up. Ingolstadt were relegated after one season, but bounced back in 2010, beating Hansa Rostock in a playoff to return to the 2. Bundesliga.
- Bundesliga: 1996–97
- DFB Liga-Pokal: 1997
- DFB-Pokal: 1997–98
- Oberliga Bayern: 1998–99
- 2. Bundesliga: 2000–01
- Regionalliga Süd: 2002–03
- "Leitl, Stefan" (in German). kicker.de. Retrieved 10 May 2012.