Singles
2021 Bol Open
Final
Champion	Jasmine Paolini
Runner-up	Arantxa Rus
Score	6–2, 7–6(7–4)
Events
Singles Doubles
← 2019 · Bol Open · 2022 →

Tamara Zidanšek was the two-time defending champion, having won the last edition in 2019,^[1] however she was unable to defend her title as she was still competing at the 2021 French Open, reaching the semi-final of the Grand Slam.

Jasmine Paolini won the title, defeating Arantxa Rus in the final, 6–2, 7–6^(7–4).

	Semifinals							Final
	1	Anna Blinkova	2	2
	3	Jasmine Paolini	6	6
								3	Jasmine Paolini	6	77
								2	Arantxa Rus	2	64
		Irina Bara	2	1
	2	Arantxa Rus	6	6

	First round							Second round							Quarterfinals							Semifinals
	1	A Blinkova	3	6	6
	PR	P Hon	6	0	1			1	A Blinkova	6	6
		UM Arconada	77	3	2			Q	A Cadanțu	2	1
	Q	A Cadanțu	61	6	6										1	A Blinkova	6	4	7
	PR	A Dulgheru	4	4												B Haas	4	6	5
		B Haas	6	6					B Haas	6	6
	WC	A Konjuh	6	63	4			6	L Samsonova	3	4
	6	L Samsonova	1	77	6																	1	A Blinkova	2	2
	3	J Paolini	6	6																		3	J Paolini	6	6
		V Kužmová	4	1				3	J Paolini	6	4	6
	Q	L Sun	3	67					O Govortsova	1	6	3
		O Govortsova	6	79											3	J Paolini	6	6
		N Párrizas Díaz	6	5	3											K Kučová	1	1
		K Kučová	4	7	6				K Kučová	3	6	6
	WC	T Mrdeža	6	6				WC	T Mrdeža	6	4	3
	8	T Babos	1	2

	First round							Second round							Quarterfinals							Semifinals
	7	A Bolsova	4	2
	WC	T Lukas	6	6				WC	T Lukas	3	0
		K Kawa	4	6	5				I Bara	6	6
		I Bara	6	4	7											I Bara	2	7	6
		G Minnen	2	1r											4	M Trevisan	6	5	0
		AK Schmiedlová	6	3					AK Schmiedlová	4	1
		R Zarazúa	2	0				4	M Trevisan	6	6
	4	M Trevisan	6	6																			I Bara	2	1
	5	S Errani	6	6																		2	A Rus	6	6
	WC	J Fett	3	3				5	S Errani	77	5	61
	Q	E Gorgodze	6	3	4				C Liu	63	7	77
		C Liu	4	6	6											C Liu	6	5	4
	Q	D Gálfi	2	3											2	A Rus	1	7	6
		K Zavatska	6	6					K Zavatska	1	0r
		Y Bonaventure	3	3				2	A Rus	6	2
	2	A Rus	6	6

	Qualifying competition
	1	Lara Arruabarrena	0	5
		Alexandra Cadanțu	6	7

	Qualifying competition
	2	Asia Muhammad	6	1	2
		Dalma Gálfi	3	6	6

	Qualifying competition
	3	Whitney Osuigwe	6	2	4
	WC	Lulu Sun	3	6	6

	Qualifying competition
	4	Ekaterine Gorgodze	6	6
	WC	Ayline Samardžić	0	0

• Main draw
• Qualifying dDraw