Singles
2018 Thindown Challenger Biella
Champion	Federico Delbonis
Runner-up	Stefano Napolitano
Score	6–4, 6–3

Filip Krajinović was the defending champion but chose not to defend his title.

Federico Delbonis won the title after defeating Stefano Napolitano 6–4, 6–3 in the final.

Seeds

Draw

Finals

	Semifinals							Final
		Stefano Napolitano	6	5	6
	6	Stefano Travaglia	3	7	2
									Stefano Napolitano	4	3
								2	Federico Delbonis	6	6
	4/Alt	Thiago Monteiro	2	3
	2	Federico Delbonis	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	R Carballés Baena	6	6
		L Giustino	3	4				1	R Carballés Baena	6	6
	Q	MT Barrios Vera	6	5	7			Q	MT Barrios Vera	4	2
		B Zapata Miralles	2	7	5										1	R Carballés Baena	3	6	1
		V Galović	2	6	4											S Napolitano	6	3	6
	WC	Enrico Dalla Valle	6	4	6			WC	E Dalla Valle	2	2
		S Napolitano	77	6					S Napolitano	6	6
	8	D Gimeno Traver	63	3																			S Napolitano	6	5	6
	3/WC	P Lorenzi	6	6																		6	S Travaglia	3	7	2
	Q	M Bourgue	2	4				3/WC	P Lorenzi	6	6
	WC	Pietro Rondoni	6	2	0				R Ojeda Lara	2	1
		R Ojeda Lara	3	6	6										3/WC	P Lorenzi	2	5
		M Donati	6	6											6	S Travaglia	6	7
	LL	Oscar José Gutierrez	3	3					M Donati	1	3r
	LL	JP Varillas	1	4				6	S Travaglia	6	1
	6	S Travaglia	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	5	M Trungelliti	4	6	6
	SE	A Davidovich Fokina	6	3	4			5	M Trungelliti	7	7
		L Grigelis	4	63					T Robredo	5	5
		T Robredo	6	77											5	M Trungelliti	1	2
		O Roca Batalla	77	2	3										4/Alt	T Monteiro	6	6
		A Arnaboldi	63	6	6				A Arnaboldi	3	1
	WC	A Pellegrino	77	1	2			4/Alt	T Monteiro	6	6
	4/Alt	T Monteiro	64	6	6																	4/Alt	T Monteiro	2	3
	7	G Elias	5	0																		2	F Delbonis	6	6
	SE	F Argüello	7	6				SE	F Argüello	6	6
		P Cachin	3	78	4				F Baldi	4	2
		F Baldi	6	66	6										SE	F Argüello	2	4
	Q	A Müller	2	2											2	F Delbonis	6	6
		S Caruso	6	6					S Caruso	3	5
	Q	J Šátral	6	3	1			2	F Delbonis	6	7
	2	F Delbonis	3	6	6

References

• Main Draw
• Qualifying Draw