The 2018 Engie Open de Seine-et-Marne was a professional tennis tournament played on indoor hard courts. It was the sixth edition of the tournament and was part of the 2018 ITF Women's Circuit. It took place in Croissy-Beaubourg, France, on 26 March–1 April 2018.

Country	Player	Rank1	Seed
RUS	Ekaterina Alexandrova	87	1
FRA	Océane Dodin	98	2
CZE	Denisa Allertová	99	3
SVK	Viktória Kužmová	106	4
FRA	Pauline Parmentier	110	5
NED	Arantxa Rus	119	6
RUS	Anna Blinkova	132	7
POL	Magdalena Fręch	140	8

• ¹ Rankings as of 19 March 2018.

The following players received a wildcard into the singles main draw:

• Audrey Albié
• Manon Léonard
• Chloé Paquet
• Jessika Ponchet

The following player received entry using a junior exempt:

• Elena Rybakina

The following players received entry from the qualifying draw:

• Olga Doroshina
• Jesika Malečková
• Karolína Muchová
• Harmony Tan

The following players received entry as Lucky Losers:

• Cristiana Ferrando
• Katarzyna Piter
• Urszula Radwańska

• Anna Blinkova def. Karolína Muchová, walkover

• Anna Kalinskaya / Viktória Kužmová def. Petra Krejsová / Jesika Malečková, 7–6^(7–5), 6–1

• Official website
• 2018 Engie Open de Seine-et-Marne at ITFtennis.com