Singles
2021 Portugal Ladies Open
Champion	Zheng Saisai
Runner-up	Harmony Tan
Score	6–4, 3–6, 6–3

Isabella Shinikova was the defending champion^[1] but chose to compete at the 2021 BGL Luxembourg Open instead.

Zheng Saisai won the title, defeating Harmony Tan in the final, 6–4, 3–6, 6–3.

Seeds

Draw

Finals

	Semifinals							Final
	1	Zheng Saisai	6	6
	4	Maddison Inglis	2	3
								1	Zheng Saisai	6	3	6
								3	Harmony Tan	4	6	3
	3	Harmony Tan	77	77
	7	Beatriz Haddad Maia	65	64

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	S Zheng	6	6
		K Okamura	2	1				1	S Zheng	2	7	7
		A Hesse	6	6					A Hesse	6	5	5
		C Monnet	1	4											1	S Zheng	6	6
		M Benoît	6	6												M Benoît	3	1
	WC	S Lança	2	0					M Benoît	4	6	6
	Q	IL Roșca	4	6	77			Q	IL Roșca	6	4	4
	6	L Cabrera	6	3	64																	1	S Zheng	6	6
	4	M Inglis	3	7	6																	4	M Inglis	2	3
	Q	W Falkowska	6	5	3			4	M Inglis	6	6
		R Anderson	77	3	5				N Stevanović	2	1
		N Stevanović	63	6	7										4	M Inglis	6	4	6
	Q	O Gadecki	4	6	6										SE	A Kulikova	2	6	3
	WC	D Spiteri	6	1	1			Q	O Gadecki	6	4	4
	SE	A Kulikova	6	6				SE	A Kulikova	2	6	6
	5	Ar Rodionova	0	4

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	8/JE	D Snigur	3	4
		J Ponchet	6	6					J Ponchet	5	4
	WC	I Murta	3	3				Q	R Șerban	7	6
	Q	R Șerban	6	6											Q	R Șerban	64	5
	WC	F Jorge	6	66	6										3	H Tan	77	7
		C Alves	2	78	2			WC	F Jorge	2	2
	Q	S Djoubri	3	3				3	H Tan	6	6
	3	H Tan	6	6																		3	H Tan	77	77
	7	B Haddad Maia	6	6																		7	B Haddad Maia	65	64
	Q	E Silva	0	1				7	B Haddad Maia	6	6
		E Perez	6	6					E Perez	4	4
	Q	S-R Sekulic	2	2											7	B Haddad Maia	6	6
		T Maria	6	6											2	Xin Wang	3	4
	Q	E Bogdan	2	4					T Maria	2	1
		A Tikhonova	3	5				2	Xin Wang	6	6
	2	Xin Wang	6	7

References

• Main Draw