2021 Engie Open de Biarritz – Singles

Singles
2021 Engie Open de Biarritz
Champion	Francesca Jones
Runner-up	Oksana Selekhmeteva
Score	6–4, 7–6(7–4)

The 2021 Engie Open de Biarritz – Singles was the singles event in the 18th edition of the Engie Open de Biarritz, a professional women's tennis tournament played on outdoor clay courts.

Viktoriya Tomova was the defending champion, having won the previous edition in 2019,^[1] however she chose to compete in Budapest instead.

Francesca Jones won the title, defeating Oksana Selekhmeteva in the final, 6–4, 7–6^(7–4).

	Semifinals							Final
	1	Francesca Jones	6	6
		Stephanie Wagner	4	1
								1	Francesca Jones	6	77
								Q	Oksana Selekhmeteva	4	64
		Lucrezia Stefanini	3	5
	Q	Oksana Selekhmeteva	6	7

	First round							Second round							Quarterfinals							Semifinals
	1	F Jones	6	6
	Q	A Carreras	2	4				1	F Jones	713	6
	Q	A Gabric	6	3	3			WC	M Rouvroy	611	0
	WC	M Rouvroy	4	6	6										1	F Jones	6	6
		M Yerolymos	6	6												A Hartono	4	1
	Q	A Robbe	4	4					M Yerolymos	2	3
		A Hartono	6	6					A Hartono	6	6
	5	AS Sánchez	0	2																		1	F Jones	6	6
	3	D Seguel	1	1																			S Wagner	4	1
	Q	J Garland	6	6				Q	J Garland	1	2
		S Wagner	6	6					S Wagner	6	6
		K Stewart	0	1												S Wagner	6	6
	WC	L Tholey	2	1											Q	L Jeanjean	2	4
	Q	L Jeanjean	6	6				Q	L Jeanjean	6	6
	JE	E Navarro	4	3				6	R Hogenkamp	2	4
	6	R Hogenkamp	6	6

	First round							Second round							Quarterfinals							Semifinals
	7	C Paquet	6	6
	WC	L Boisson	4	2				7	C Paquet	3	6	62
		D Parry	1	4					L Stefanini	6	3	77
		L Stefanini	6	6												L Stefanini	4	6	7
	PR	L Chirico	6	69	4											S Mendez	6	3	5
		S Mendez	1	711	6				S Mendez	6	3	6
		G Maristany	3	5				4	A Hesse	4	6	4
	4	A Hesse	6	7																			L Stefanini	3	5
	8	E Kostova	4	3																		Q	O Selekhmeteva	6	7
	Q	E Cascino	6	6				Q	E Cascino	3	3
	Q	T Pieri	1	6	0				D Vismane	6	6
		D Vismane	6	4	6											D Vismane	1	4
	WC	S Janicijevic	5	1											Q	O Selekhmeteva	6	6
	Q	O Selekhmeteva	7	6				Q	O Selekhmeteva	6	77
		A Ramé	4	6	6				A Ramé	1	64
	2	T Andrianjafitrimo	6	4	4

• Main Draw