Singles
2018 Open de Cagnes-sur-Mer
Final
Champion	Rebecca Peterson
Runner-up	Dayana Yastremska
Score	6–4, 7–5
Events
Singles Doubles
← 2017 · Open de Cagnes-sur-Mer · 2019 →

Beatriz Haddad Maia was the defending champion, but chose to compete at the 2018 Mutua Madrid Open instead.

Rebecca Peterson won the title, defeating Dayana Yastremska in the final, 6–4, 7–5.

	Semifinals							Final
		Ons Jabeur	2	3
	8	Rebecca Peterson	6	6
								8	Rebecca Peterson	6	7
								Q	Dayana Yastremska	4	5
	4/WC	Andrea Petkovic	2	1
	Q	Dayana Yastremska	6	6

	First round							Second round							Quarterfinals							Semifinals
	1	C Witthöft	3	4
	Q	B Schoofs	6	6				Q	B Schoofs	6	6
		D Kovinić	6	6					D Kovinić	4	4
		C Zhao	3	2											Q	B Schoofs	2	2
		A Blinkova	5	6	4											O Jabeur	6	6
	Q	A Dulgheru	7	4	6			Q	A Dulgheru	1	2
		O Jabeur	6	6					O Jabeur	6	6
	6	A Rus	0	3																			O Jabeur	2	3
	3	O Dodin	6	6																		8	R Peterson	6	6
		M Zanevska	3	3				3	O Dodin	1	7	1
	Q	D Seguel	6	6				Q	D Seguel	6	5	6
		D Jakupović	4	3											Q	D Seguel	3	4
	WC	F Ferro	6	3	4										8	R Peterson	6	6
		T Korpatsch	4	6	6				T Korpatsch	2	1
	WC	A Hesse	0	0				8	R Peterson	6	6
	8	R Peterson	6	6

	First round							Second round							Quarterfinals							Semifinals
	5	V Kužmová	6	6
	LL	P Hon	3	2				5	V Kužmová	7	6
		T Martincová	4	2					J Paolini	5	2
		J Paolini	6	6											5	V Kužmová	6	2	1
		M Fręch	2	3											4/WC	A Petkovic	2	6	6
		E Rodina	6	6					E Rodina	0	3
	WC	E Bouchard						4/WC	A Petkovic	6	6
	4/WC	A Petkovic	w/o																			4/WC	A Petkovic	2	1
	7	J Fett	2	63																		Q	D Yastremska	6	6
		N Gibbs	6	77					N Gibbs	4	65
		V Golubic	6	4	6				V Golubic	6	77
	LL	J Fourlis	3	6	1											V Golubic	5	6	4
		O Rogowska	5	2											Q	D Yastremska	7	1	6
	Q	D Yastremska	7	6				Q	D Yastremska	6	6
		J Teichmann	6	64	6				J Teichmann	3	3
	2	P Parmentier	2	77	4

• Main Draw