Singles
2012 Busan Open Challenger Tennis
Champion	Tatsuma Ito
Runner-up	John Millman
Score	6–4, 6–3

Dudi Sela was the defending champion but decided not to participate.

Tatsuma Ito won the title defeating John Millman in the final 6–4, 6–3.

This tournament featured the fastest serve ever recorded by Sam Groth at 263.4 km/h (163.4 mph).

Seeds

Draw

Finals

	Semifinals							Final
	7	Tsung-hua Yang	63	7	63
		John Millman	77	5	77
									John Millman	4	3
								2	Tatsuma Ito	6	6
	6	Danai Udomchoke	5	6	3
	2	Tatsuma Ito	7	0	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	Y-h Lu	4	2
		D Garza	6	6					D Garza	4	3
		I Klec	6	3	6				I Klec	6	6
		A Bossel	2	6	3											I Klec	3	5
	Q	K Takeuchi	2	6	4										7	T-h Yang	6	7
	WC	S-y Jeong	6	3	6			WC	S-y Jeong	3	5
	Q	C Rungkat	4	3				7	T-h Yang	6	7
	7	T-h Yang	6	6																		7	T-h Yang	63	7	63
	4	R de Voest	6	4	63																		J Millman	77	5	77
		U Ignatik	3	6	77				U Ignatik	6	6
		H Moriya	3	67					S Groth	4	3
		S Groth	6	79												U Ignatik	6	3	2
		Michael Look	69	4												J Millman	2	6	6
		V Vardhan	711	6					V Vardhan	4	3
		J Millman	4	6	6				J Millman	6	6
	5	I van der Merwe	6	3	4

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	D Udomchoke	6	4	78
		J Wang	3	6	66			6	D Udomchoke	6	6
	WC	J S Nam	3	3					Y Bhambri	0	3
		Y Bhambri	6	6											6	D Udomchoke	77	6
		R Klaasen	5	6	1											F Nielsen	64	4
		F Nielsen	7	4	6				F Nielsen	711	6
		Z Zhang	6	6					Z Zhang	69	2
	3	M Chiudinelli	2	4																		6	D Udomchoke	5	6	3
	8	A Weintraub	6	713																		2	T Ito	7	0	6
		Y Uchiyama	1	611				8	A Weintraub	6	6
		T Matsui	3	6	6				T Matsui	1	1
	WC	J-w Na	6	3	4										8	A Weintraub	5	77	1
	Q	Kim Cheong-eui	3	2											2	T Ito	7	63	6
	WC	H Chung	6	6				WC	H Chung	2	77	2
	Q	M McClune	5	4				2	T Ito	6	61	6
	2	T Ito	7	6

References

• Main Draw
• Qualifying Draw