Two-time defending champion Rafael Nadal defeated Nicolás Almagro in the final, 6–4, 6–3 to win the singles tennis title at the 2013 Barcelona Open. It was his record-extending eighth Barcelona Open title.
Seeds All seeds receive a bye into the second round.
Draw
Finals
Top half
Section 1
Section 2
Bottom half
Section 3
Section 4
Qualifying
Seeds
Qualifiers
Lucky losers Jan-Lennard Struff
Draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
Fifth qualifier
Sixth qualifier
References Main Draw Qualifying Draw