Singles
2021 Tali Open
Final
Champion	Alex Molčan
Runner-up	João Sousa
Score	6–3, 6–2
Events
Singles Doubles
← 2019 · Tali Open · 2022 →

Emil Ruusuvuori was the defending champion^[1] but withdrew from the tournament before his first round match.

Alex Molčan won the title after defeating João Sousa 6–3, 6–2 in the final.

	Semifinals							Final
	Q	Alexander Shevchenko	2	64
	3	Alex Molčan	6	77
								3	Alex Molčan	6	6
									João Sousa	3	2
		João Sousa	6	6
	2	Henri Laaksonen	4	3

	First round							Second round							Quarterfinals							Semifinals
	LL	K Jacquet	2	1
	Q	A Shevchenko	6	6				Q	A Shevchenko	78	5
		K Coppejans	4	4				Alt	M Bachinger	66	1r
	Alt	M Bachinger	6	6											Q	A Shevchenko	6	0
		E Gómez	6	2	3											M Moraing	4	0r
		M Marterer	4	6	6				M Marterer	65	6	4
		M Moraing	6	6					M Moraing	77	2	6
	7	J Kovalík	3	4																		Q	A Shevchenko	2	64
	3	A Molčan	6	0	77																	3	A Molčan	6	77
		T van Rijthoven	4	6	61			3	A Molčan	6	6
		F Ferreira Silva	3	6	3r			Q	S Mochizuki	3	2
	Q	S Mochizuki	6	2	4										3	A Molčan	6	4	6
		J Rodionov	7	6											5	O Otte	3	6	1
		M Safwat	5	4					J Rodionov	1	2
		D Džumhur	2	3				5	O Otte	6	6
	5	O Otte	6	6

	First round							Second round							Quarterfinals							Semifinals
	6	L Broady	6	6
	SE	Z Piros	3	2				6	L Broady	6	7
	Q	J De Loore	6	6				Q	J De Loore	3	5
		T Kamke	3	4											6	L Broady	77	2	61
		J Sousa	6	711												J Sousa	63	6	77
	WC	P Niklas-Salminen	3	69					J Sousa	5	6	6
	Q	J Forejtek	4	6	6			Q	J Forejtek	7	4	4
	4	E Gerasimov	6	3	4																		J Sousa	6	6
	8	N Milojević	6	6																		2	H Laaksonen	4	3
		F Cobolli	3	2				8	N Milojević	3	6	6
		R Ramanathan	4	6	6				R Ramanathan	6	1	2
	WC	O Virtanen	6	4	3										8	N Milojević	2	3
	WC	J Draper	5	1											2	H Laaksonen	6	6
	Alt	J Lenz	7	6				Alt	J Lenz	2	5
		D Istomin	3	3				2	H Laaksonen	6	7
	2	H Laaksonen	6	6

• Main draw
• Qualifying draw