2018 Challenger La Manche – Singles

Mathias Bourgue was the defending champion but lost in the second round to Constant Lestienne.

Maximilian Marterer won the title after defeating Lestienne 6–4, 7–5 in the final.

Seeds
• # 🇫🇷 Gilles Simon (second round)

• # 🇩🇪 Maximilian Marterer (champion)

• # 🇹🇳 Malek Jaziri (second round)

• # 🇮🇹 Matteo Berrettini (semifinals)

• # 🇩🇪 Oscar Otte (second round)

• # 🇸🇰 Norbert Gombos (first round)

• # 🇫🇷 Kenny de Schepper (quarterfinals)

• # 🇫🇷 Calvin Hemery (first round)