Singles
2013 All Japan Indoor Tennis Championships
Champion	John Millman
Runner-up	Marco Chiudinelli
Score	4–6, 6–4, 7–6(7–2)

Tatsuma Ito was the defending champion but decided to participate at the 2013 BNP Paribas Open instead.
In the final, fourth seeded John Millman outlasted second seeded Marco Chiudinelli in 2 hours and 26 minutes to claim the title with a scoreline of 4–6, 6–4, 7–6^(7–2).

Seeds

Draw

Finals

	Semifinals							Final
	5	Hiroki Moriya	64	1
	4	John Millman	77	6
								4	John Millman	4	6	77
								2	Marco Chiudinelli	6	4	62
		Matthew Barton	66	4
	2	Marco Chiudinelli	78	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	Y Sugita	6	6
		M Reid	4	4				1	Y Sugita	w/o
		G Jones	77	7					G Jones
		B Mitchell	65	5											1	Y Sugita	64	7	3
		M Gong	77	1	3										5	H Moriya	77	5	6
	SE	A Sitak	66	6	6			SE	A Sitak
		T-h Yang	2	4				5	H Moriya	w/o
	5	H Moriya	6	6																		5	H Moriya	64	1
	4	J Millman	77	6																		4	J Millman	77	6
	Q	T Matsui	64	4				4	J Millman	4	6	77
	Q	H Kondo	6	6				Q	H Kondo	6	1	63
	Q	Adrian Sikora	2	0											4	J Millman	6	3	6
		S Groth	77	6											7	P Gojowczyk	3	6	3
		S-y Jeong	65	4					S Groth	4	4
	WC	T Niki	3	4				7	P Gojowczyk	6	6
	7	P Gojowczyk	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	8	D Meffert	6	6
	WC	K Takeuchi	3	4				8	D Meffert	77	77
	Q	M Venus	5	3					A Arnaboldi	64	60
		A Arnaboldi	7	6											8	D Meffert	6	3	4
	WC	Masato Shiga	0	3												M Barton	3	6	6
		M Barton	6	6					M Barton	77	6
		Y Uchiyama	6	4	6				Y Uchiyama	60	4
	LL	Shuichi Sekiguchi	3	6	0																		M Barton	66	4
	6	M Przysiężny	7	6																		2	M Chiudinelli	78	6
	WC	K Uchida	5	3				6	M Przysiężny	64	6	7
		Y Bhambri	6	6					Y Bhambri	77	3	5
		L-c Huang	4	2											6	M Przysiężny	6	69	1
		J Statham	4	6	3										2	M Chiudinelli	3	711	6
		J Duckworth	6	4	6				J Duckworth	65	79	2
		L Saville	6	4	0			2	M Chiudinelli	77	67	6
	2	M Chiudinelli	3	6	6

References

• Main Draw
• Qualifying Draw