Singles
2012 St. Petersburg Open
Champion	Martin Kližan
Runner-up	Fabio Fognini
Score	6–2, 6–3
Draw	32
Seeds	8

Marin Čilić was the defending champion but chose not to compete.
Martin Kližan won his first ATP World Tour title by defeating Fabio Fognini in the final, 6–2, 6–3.

Seeds

Draw

Finals

	Semifinals							Final
	1	Mikhail Youzhny	713	4	63
	3	Martin Kližan	611	6	77
								3	Martin Kližan	6	6
								4	Fabio Fognini	2	3
	4	Fabio Fognini	6	6
		Daniel Gimeno-Traver	3	4

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	M Youzhny	77	6
		V Pospisil	64	1				1	M Youzhny	6	6
		M Bachinger	4	4					R Ram	1	4
		R Ram	6	6											1	M Youzhny	6	0	6
	Q	S Betov	6	2	2										7	G García-López	4	6	3
		P Lorenzi	1	6	6				P Lorenzi	1	1r
	WC	E Donskoy	6	4	3			7	G García-López	6	3
	7	G García-López	2	6	6																	1	M Youzhny	713	4	63
	3	M Kližan	6	6																		3	M Kližan	611	6	77
	WC	M Elgin	4	3				3	M Kližan	6	6
		S Bolelli	77	7					S Bolelli	3	3
		H Zeballos	63	5											3	M Kližan	6	6
		P Petzschner	2	3r												R Berankis	3	2
		R Berankis	6	3					R Berankis	6
	Q	A Kumantsov	3	3r				8	J Zopp	3	r
	8	J Zopp	6	5

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	Y-h Lu	4	2
		R Bautista-Agut	6	6					R Bautista-Agut	6	6
	WC	T Gabashvili	6	6				WC	T Gabashvili	3	4
	Q	N Fidirko	2	0												R Bautista-Agut	4	61
	LL	I Nedelko	62	2											4	F Fognini	6	77
		S Stakhovsky	77	6					S Stakhovsky	64	4
		T Kamke	6	2	3			4	F Fognini	77	6
	4	F Fognini	4	6	6																	4	F Fognini	6	6
	5	L Lacko	3	2																			D Gimeno-Traver	3	4
		G Žemlja	6	6					G Žemlja	2	77	3
		F Cipolla	77	78					F Cipolla	6	65	6
	Q	A Vasilevski	64	66												F Cipolla	2	5
		F Serra	65	2												D Gimeno-Traver	6	7
		D Gimeno-Traver	77	6					D Gimeno-Traver	6	77
		Ł Kubot	4	6	6				Ł Kubot	4	65
	2	D Istomin	6	3	4

Qualifying

Draw

First qualifier

	Second round							Qualifying competition
	1	Andrey Kumantsov	6	7
		Sergey Strelkov	3	5
								1	Andrey Kumantsov	6	77
								7	Morgan Phillips	1	64
	WC	Vugar Aliev	2	5
	7	Morgan Phillips	6	7

Second qualifier

	First round							Second round							Qualifying competition
								2	Stanislav Poplavskyy	1	2
		Valery Rudnev	4	77	6				Valery Rudnev	6	6
		Aslan Karatsev	6	61	3											Valery Rudnev	3	6	0
		Nikolai Fidirko	6	6												Nikolai Fidirko	6	4	6
	WC	Timofey Skripkin	2	0					Nikolai Fidirko	3	7	6
								8	Anton Zaitsev	6	5	2

Third qualifier

	Second round							Qualifying competition
	3	Ivan Nedelko	6	6
	WC	Nikita Gudozhnikov	1	1
								3	Ivan Nedelko	2	65
									Andrei Vasilevski	6	77
		Andrei Vasilevski	7	6
	6	Egor Gerasimov	5	1

Fourth qualifier

	First round							Second round							Qualifying competition
								4	Sergey Betov	6	6
	WC	Artur Gusev	0	0					Volodymyr Uzhylovskyi	3	3
		Volodymyr Uzhylovskyi	6	6											4	Sergey Betov	6	6
		Beka Komakhidze	2	0												František Čermák	4	4
		František Čermák	6	6					František Čermák	6	1	6
								5	Mikhail Fufygin	4	6	0

References

• Main Draw
• Qualifying Draw