The 2020 Challenger La Manche was a professional tennis tournament played on indoor hard courts. It was the 27th edition of the tournament which was part of the 2020 ATP Challenger Tour. It took place in Cherbourg, France between 9 and 16 February 2020.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 France | Antoine Hoang | 126 | 1 | |
 Italy | Roberto Marcora | 174 | 2 | |
| France | Maxime Janvier | 180 | 3 | |
 Argentina | Marco Trungelliti | 195 | 4 | |
| France | Quentin Halys | 199 | 5 | |
 Turkey | Cem İlkel | 200 | 6 | |
| France | Constant Lestienne | 203 | 7 | |
 Spain | Bernabé Zapata Miralles | 209 | 8 | |
 Japan | Hiroki Moriya | 211 | 9 | |
 Russian Federation | Alexey Vatutin | 212 | 10 | |
| Matthias Bachinger | 213 | 11 | ||
 Czech Republic | Zdeněk Kolář | 217 | 12 | |
| Italy | Matteo Viola | 218 | 13 | |
| France | Tristan Lamasine | 221 | 14 | |
| France | Mathias Bourgue | 225 | 15 | |
| Spain | Nicola Kuhn | 227 | 16 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Vít Kopřiva Jules MarieSee main article: 2020 Challenger La Manche – Singles.
Roman Safiullin def. Roberto Marcora 6–4, 6–2.See main article: 2020 Challenger La Manche – Doubles.
Pavel Kotov / Roman Safiullin def. Dan Added / Albano Olivetti 7–6(8–6), 5–7, [12–10].