Singles
1984 Tokyo Indoor
Final
Champion	Jimmy Connors
Runner-up	Ivan Lendl
Score	6–4, 3–6, 6–0
Details
Draw	32
Seeds	8
Events
Singles Doubles
← 1983 · Tokyo Indoor · 1985 →

Ivan Lendl was the defending champion.

Jimmy Connors won the tournament, beating Lendl in the final, 6–4, 3–6, 6–0.

	Semifinals							Final
	1	Jimmy Connors	6	6
	4	Andrés Gómez	3	2
								1	Jimmy Connors	6	3	6
								2	Ivan Lendl	4	6	0
		Ramesh Krishnan	2	4
	2	Ivan Lendl	6	6

	First round							Second round							Quarterfinals							Semifinals
	1	J Connors	6	6
		T Moor	2	4				1	J Connors	6	6
		B Green	6	6					B Green	4	2
		S Shiraishi	2	4											1	J Connors	6	7
		Ti Gullikson	4	1												M Dickson	4	5
		M Dickson	6	6					M Dickson	2	6	6
	Q	G Michibata	6	6				Q	G Michibata	6	3	2
	5	A Järryd	4	2																		1	J Connors	6	6
	4	A Gómez	7	6																		4	A Gómez	3	2
		G Holmes	6	2				4	A Gómez	6	6	7
		T Fukui	6	1					To Gullikson	3	7	5
		To Gullikson	7	6											4	A Gómez	6	6
		E Korita	6	7												E Korita	3	2
		N Odizor	4	5					E Korita	6	7
		B Scanlon	6	6					B Scanlon	3	6
	8	B Gilbert	4	1

	First round							Second round							Quarterfinals							Semifinals
	6	T Šmíd	6	4	2
		R Krishnan	2	6	6				R Krishnan	6	6
	Q	D Gitlin	6	1	1				Z Kuhárszky	0	4
		Z Kuhárszky	4	6	6											R Krishnan	5	6	7
	Q	F González	1	6	5										3	M Wilander	7	4	6
		B Testerman	6	3	7				B Testerman	3	2
		J Sadri	6	4				3	M Wilander	6	6
	3	M Wilander	7	6																			R Krishnan	2	4
	7	S Davis	7	3	6																	2	I Lendl	6	6
		M Davis	5	6	7				M Davis	3	0
		A Amritraj	6	6					A Amritraj	6	6
		L Shiras	3	0												A Amritraj	4	4
	Q	M Anger	6	7											2	I Lendl	6	6
		J Fitzgerald	4	6				Q	M Anger	0	2
		S Giammalva Jr.	4	1				2	I Lendl	6	6
	2	I Lendl	6	6

• Main draw