Singles
1981 ABN World Tennis Tournament
Final
Champion	Jimmy Connors
Runner-up	Gene Mayer
Score	6–1, 2–6, 6–2
Details
Draw	32
Seeds	8
Events
Singles Doubles
← 1980 · ABN World Tennis Tournament · 1982 →

Heinz Günthardt was the defending champion of the singles event at the ABN World Tennis Tournament, but did not participate in this edition. First-seeded Jimmy Connors won the title after a victory in the final against second-seeded Gene Mayer 6–1, 2–6, 6–2.^[1]

	Semifinals							Final
	1	Jimmy Connors	6	6
	5	Brian Gottfried	2	3
								1	Jimmy Connors	6	2	6
								2	Gene Mayer	1	6	2
	3	Wojtek Fibak	2	3
	2	Gene Mayer	6	6

	First round							Second round							Quarterfinals							Semifinals
	1	Jimmy Connors	6	6
		Tim Wilkison	2	1
								1	Jimmy Connors	6	6
									Eric Wilborts	1	1
		Eric Wilborts	2	6	6
		Pat Dupre	6	4	4
															1	Jimmy Connors	6	6
																Sandy Mayer	4	3
		Bill Scanlon	6	6
		Andrés Gómez	3	0
									Bill Scanlon	7	3	2
									Sandy Mayer	6	6	6
		Sandy Mayer	6	6
	8	Robert Lutz	3	1
																						1	Jimmy Connors	6	6
																						5	Brian Gottfried	2	3
	4	Yannick Noah	5	6	6
		Peter Rennert	7	4	1
								4	Yannick Noah	6	6
									Rolf Gehring	4	2
		Rolf Gehring	6	4	6
		Marc Albert	1	6	4
															4	Yannick Noah	7	3	6
															5	Brian Gottfried	6	6	7
		Tomáš Šmíd	6	6	6
		Kjell Johansson	7	4	1
									Tomáš Šmíd	4	4
								5	Brian Gottfried	6	6
		Chris Lewis	4	4
	5	Brian Gottfried	6	6

	First round							Second round							Quarterfinals							Semifinals
	7	Vijay Amritraj	6	6
		Jan Norbäck	2	2
								7	Vijay Amritraj	6	7	6
									Raúl Ramírez	7	5	7
		Raúl Ramírez	6	6
		Manuel Orantes	1	1
																Raúl Ramírez	1	4
															3	Wojtek Fibak	6	6
		Trey Waltke	6	4	7
		Eddie Edwards	2	6	6
									Trey Waltke	3	6
								3	Wojtek Fibak	6	7
		Carlos Kirmayr	1	6	0
	3	Wojtek Fibak	6	4	6
																						3	Wojtek Fibak	2	3
																						2	Gene Mayer	6	6
	6	Balázs Taróczy	2	3
		Buster Mottram	6	6
									Buster Mottram	7	6
									Fritz Buehning	5	1
		Louk Sanders	6	6	3
		Fritz Buehning	7	4	6
																Buster Mottram	1	6
															2	Gene Mayer	6	7
		Kim Warwick	1	6	0
		Tim Gullikson	6	3	6
									Tim Gullikson	6	6
								2	Gene Mayer	7	7
		Kevin Curren	2	2
	2	Gene Mayer	6	6

• ITF tournament edition details