| Date: | 26 March–1 April |
| Edition: | 6th |
| Category: | ITF Women's Circuit |
| Location: | Croissy-Beaubourg, France |
| Surface: | Hard / Indoor |
| Prize Money: | $60,000 |
| Champs: |  Anna Blinkova |
| Champd: | Anna Kalinskaya /  Viktória Kužmová |
| Main Name: | Open de Seine-et-Marne |
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 | |
|---|---|---|---|---|
| Russian Federation | Ekaterina Alexandrova | 87 | 1 | |
 France | ||||
 Czech Republic | Denisa Allertová | 99 | 3 | |
| Slovakia | Viktória Kužmová | 106 | 4 | |
| France | Pauline Parmentier | 110 | 5 | |
| Arantxa Rus | 119 | 6 | ||
| Russian Federation | Anna Blinkova | 132 | 7 | |
 Poland | Magdalena Fręch | 140 | 8 |
The following players received a wildcard into the singles main draw:
Audrey Albié Manon Léonard Chloé Paquet Jessika PonchetThe following player received entry using a junior exempt:
The following players received entry from the qualifying draw:
The following players received entry as Lucky Losers:
See main article: 2018 Engie Open de Seine-et-Marne – Singles.
Anna Blinkova def. Karolína Muchová, walkover Anna Kalinskaya / Viktória Kužmová def. Petra Krejsová / Jesika Malečková, 7–6(7–5), 6–1