Singles
2022 Open de Oeiras III
Final
Champion	Kaichi Uchida
Runner-up	Kimmer Coppejans
Score	6–2, 6–4
Events
Singles Doubles
← 2022 · Open de Oeiras · 2023 →

Gastão Elias was the three-time defending champion^[1] but chose not to defend his title.

Kaichi Uchida won the title after defeating Kimmer Coppejans 6–2, 6–4 in the final.

	Semifinals							Final
		Kimmer Coppejans	711	4	77
	3	Nicolás Jarry	69	6	65
									Kimmer Coppejans	2	4
								6	Kaichi Uchida	6	6
	6	Kaichi Uchida	7	77
	2	Facundo Bagnis	5	64

	First round							Second round							Quarterfinals							Semifinals
	1	R Carballés Baena	4	5
		K Coppejans	6	7					K Coppejans	7	6
		S Diez	2	6	6				S Diez	5	1
		S Fanselow	6	1	4											K Coppejans	5	77	6
		B Hassan	4	4												D Michalski	7	62	3
		D Michalski	6	6					D Michalski	6	6
	WC	Pedro Araújo	3	7	7			WC	P Araújo	3	3
	8	L Lokoli	6	5	5																		K Coppejans	711	4	77
	3	N Jarry	6	6																		3	N Jarry	69	6	65
		Eduard Esteve Lobato	4	4				3	N Jarry	6	6
		G Oliveira	6	5	6				G Oliveira	3	3
	Q	T Bellucci	4	7	1										3	N Jarry	79	4	78
		O Roca Batalla	4	4											Alt	K Jacquet	67	6	66
	Q	Oscar José Gutierrez	6	6				Q	OJ Gutierrez	4	3
	Alt	K Jacquet	6	6				Alt	K Jacquet	6	6
	5	E Karlovskiy	3	4

	First round							Second round							Quarterfinals							Semifinals
	6	K Uchida	6	6
		L Wessels	4	1				6	K Uchida	6	0
	WC	T Cação	79	2	4				T Kamke	3	0r
		T Kamke	67	6	6										6	K Uchida	4	6	6
		C Gimeno Valero	64	6	5											M Geerts	6	1	4
	WC	J Domingues	77	4	7			WC	J Domingues	1	4
		M Geerts	6	6					M Geerts	6	6
	4	D Dutra da Silva	2	4																		6	K Uchida	7	77
	7	J Nikles	4	6	6																	2	F Bagnis	5	64
		E Kırkın	6	3	0			7	J Nikles	6	4	3
	Q	A Rybakov	6	7				Q	A Rybakov	4	6	6
	Q	P Boscardin Dias	3	5											Q	A Rybakov	4	6	3
	Q	A Lazarov	6	2	4										2	F Bagnis	6	2	6
		N Sánchez Izquierdo	2	6	6				N Sánchez Izquierdo	4	2
	Q	Lucas Gerch	6	63	3			2	F Bagnis	6	6
	2	F Bagnis	3	77	6

• Main draw
• Qualifying draw