First-seeded Rafael Nadal defeated Gastón Gaudio in the final, 6–3, 6–3, 6–4 to win the singles tennis title at the 2005 Stuttgart Open.

Guillermo Cañas was the reigning champion, but did not participate this year.

Seeds

Draws

Key Q - Qualifier WC - Wild Card r - Retired LL - Lucky loser w/o - Walkover

Finals

Top half

Section 1

Section 2

Bottom half

Section 3

Section 4

External links Main draw