2011 St. Petersburg Open
Date	24–31 October
Edition	17th
Category	ATP World Tour 250 Series
Draw	32S / 16D
Prize money	$663,750
Surface	Hard / indoor
Location	St. Petersburg, Russia
Venue	Petersburg Sports and Concert Complex
Champions
Singles
Marin Čilić
Doubles
Colin Fleming / Ross Hutchins
← 2010 · St. Petersburg Open · 2012 →

The 2011 St. Petersburg Open was a tennis tournament played on indoor hard courts. It was the 17th edition of the St. Petersburg Open, and part of the ATP World Tour 250 Series of the 2011 ATP World Tour. It took place at the Petersburg Sports and Concert Complex in Saint Petersburg, Russia, from October 24 through October 30, 2011.

ATP entrants

Seeds

Country	Player	Rank*	Seed
FRA	Gilles Simon	12	1
SRB	Janko Tipsarević	14	2
UKR	Alexandr Dolgopolov	17	3
CRO	Marin Čilić	22	4
RUS	Mikhail Youzhny	34	5
ESP	Marcel Granollers	35	6
USA	Alex Bogomolov Jr.	37	7
RUS	Dmitry Tursunov	40	8

* Seeds are based on the rankings of October 17, 2011.

Other entrants

The following players received wildcards into the singles main draw:

• Ernests Gulbis
• Ivan Nedelko
• Dudi Sela

The following players received entry a special exempt into the singles main draw:

• Jérémy Chardy

The following players received entry from the qualifying draw:

• Sergei Bubka
• Teymuraz Gabashvili
• Dušan Lajović
• Vasek Pospisil

Finals

Singles

Marin Čilić defeated Janko Tipsarević 6–3, 3–6, 6–2

• It was Čilić's 1st title of the year and 6th of his career.

Doubles

Colin Fleming / Ross Hutchins defeated Michail Elgin / Alexandre Kudryavtsev 6–3, 6–7^(5–7), [10–8]