Singles
2021 Biella Challenger Indoor
Champion	Illya Marchenko
Runner-up	Andy Murray
Score	6–2, 6–4

This was the first of seven editions of the tournament in the 2021 tennis season.^[1]

Unseeded Illya Marchenko won the title after defeating the top seed Andy Murray 6–2, 6–4 in the final.

Seeds

Draw

Finals

	Semifinals							Final
	1/WC	Andy Murray	6	7
		Mathias Bourgue	0	5
								1/WC	Andy Murray	2	4
									Illya Marchenko	6	6
		Illya Marchenko	7	6
	2	Federico Gaio	5	1

Top half

	First round							Second round							Quarterfinals							Semifinals
	1/WC	A Murray	63	6	6
		M Marterer	77	2	3			1/WC	A Murray	6	6
		E Karlovskiy	64	4					GM Moroni	4	4
		GM Moroni	77	6											1/WC	A Murray	6	711
		B Kavčič	3	6	5										6	B Rola	4	69
		M Viola	6	3	7				M Viola	6	5	4
		T-S Kwiatkowski	3	2				6	B Rola	3	7	6
	6	B Rola	6	6																		1/WC	A Murray	6	7
	3	M Safwat	4	6	6																		M Bourgue	0	5
		H Moriya	6	3	2			3	M Safwat	6	2	3
	WC	A Andreev	2	5					M Bachinger	4	6	6
		M Bachinger	6	7												M Bachinger	1	77	1
		M Bourgue	77	6												M Bourgue	6	63	6
		A Pellegrino	64	1					M Bourgue	6	7
	Q	Fabrizio Ornago	2	2				7	F Horanský	3	5
	7	F Horanský	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	5	M Kližan	2	67
		I Marchenko	6	79					I Marchenko	710	6
		T Fabbiano	1	4				WC	L Vanni	68	1
	WC	L Vanni	6	6												I Marchenko	6	2	7
		T Kamke	3	5											4	L Giustino	2	6	5
		R Marcora	6	7					R Marcora	63	5
	Q	J Sels	4	3				4	L Giustino	77	7
	4	L Giustino	6	6																			I Marchenko	7	6
	8	D Popko	6	6																		2	F Gaio	5	1
		M Jaziri	1	3				8	D Popko	6	2	3
		D Masur	6	7					D Masur	4	6	6
		S Napolitano	3	5												D Masur	3	3
	Q	T van Rijthoven	6	3	6										2	F Gaio	6	6
	Q	G Fonio	4	6	3			Q	T van Rijthoven	4	4
		L Lacko	3	4				2	F Gaio	6	6
	2	F Gaio	6	6

References

External links

• Main draw
• Qualifying draw