| Singles | |
|---|---|
| 2024 Challenger La Manche | |
| Champion |  Zsombor Piros |
| Runner-up |  Matteo Martineau |
| Score | 6–3, 6–4 |
Giulio Zeppieri was the defending champion [1] but chose not to defend his title.
Zsombor Piros won the title after defeating Matteo Martineau 6–3, 6–4 in the final.
Brandon Nakashima (second round) Quentin Halys (semifinals) Benoît Paire (second round) Zsombor Piros (champion) Titouan Droguet (quarterfinals)
Jan Choinski (first round) Pierre-Hugues Herbert (withdrew) Antoine Escoffier (first round)| Semifinals | Final | ||||||||||||
 Michael Geerts | 5 | 4 | |||||||||||
| Matteo Martineau | 7 | 6 | |||||||||||
| Matteo Martineau | 3 | 4 | |||||||||||
| 4 | Zsombor Piros | 6 | 6 | ||||||||||
| 4 | Zsombor Piros | 77 | 6 | ||||||||||
| 2/WC | Quentin Halys | 65 | 3 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | B Nakashima | 6 | 6 | ||||||||||||||||||||||||
| V Royer | 4 | 4 | 1 | B Nakashima | 4 | 4 | |||||||||||||||||||||
 O Otte | 77 | 3 | 4 | M Geerts | 6 | 6 | |||||||||||||||||||||
| M Geerts | 65 | 6 | 6 | M Geerts | 6 | 6 | |||||||||||||||||||||
 M Copil | 3 | 4 |  M Lajal | 1 | 3 | ||||||||||||||||||||||
| Lucas Poullain | 6 | 6 | L Poullain | 65 | 1 | ||||||||||||||||||||||
| M Lajal | 6 | 6 | M Lajal | 77 | 6 | ||||||||||||||||||||||
| LL | Alexis Gautier | 3 | 3 | M Geerts | 5 | 4 | |||||||||||||||||||||
| 3/WC | B Paire | 7 | 6 | M Martineau | 7 | 6 | |||||||||||||||||||||
| G Mpetshi Perricard | 5 | 4 | 3/WC | B Paire | 1 | 4 | |||||||||||||||||||||
| M Martineau | 6 | 3 | 6 | M Martineau | 6 | 6 | |||||||||||||||||||||
| WC | Maé Malige | 2 | 6 | 1 | M Martineau | 6 | 6 | ||||||||||||||||||||
 A Kachmazov | 7 | 2 | 6 | A Kachmazov | 2 | 4 | |||||||||||||||||||||
| Q | Buvaysar Gadamauri | 5 | 6 | 2 | A Kachmazov | 6 | 6 | ||||||||||||||||||||
| Q | T Lamasine | 6 | 3 | 77 | Q | T Lamasine | 3 | 4 | |||||||||||||||||||
| 6 | J Choinski | 4 | 6 | 63 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | A Escoffier | 78 | 2 | 0 | |||||||||||||||||||||||
| Jules Marie | 66 | 6 | 6 | J Marie | 6 | 3 | 2 | ||||||||||||||||||||
| M Damm | 64 | 1 | Q | N Vylegzhanin | 1 | 6 | 6 | ||||||||||||||||||||
| Q | Nikolay Vylegzhanin | 77 | 6 | Q | N Vylegzhanin | 4 | 6 | 4 | |||||||||||||||||||
 L Giustino | 61 | 3 | 4 | Z Piros | 6 | 4 | 6 | ||||||||||||||||||||
| M Bellucci | 77 | 6 | M Bellucci | 3 | 5 | ||||||||||||||||||||||
| Q | L Rottoli | 1 | 2 | 4 | Z Piros | 6 | 7 | ||||||||||||||||||||
| 4 | Z Piros | 6 | 6 | 4 | Z Piros | 77 | 6 | ||||||||||||||||||||
| 5 | T Droguet | 77 | 6 | 2/WC | Q Halys | 65 | 3 | ||||||||||||||||||||
| Q |  J Trotter | 65 | 4 | 5 | T Droguet | 6 | 6 | ||||||||||||||||||||
 R Berankis | 6 | 4 | 7 | R Berankis | 2 | 3 | |||||||||||||||||||||
| H Squire | 3 | 6 | 5 | 5 | T Droguet | 5 | 6 | 3 | |||||||||||||||||||
 Z Kolář | 4 | 2 | 2/WC | Q Halys | 7 | 4 | 6 | ||||||||||||||||||||
| Q |  H Naw | 6 | 6 | Q | H Naw | 3 | 63 | ||||||||||||||||||||
 A Galarneau | 4 | 4 | 2/WC | Q Halys | 6 | 77 | |||||||||||||||||||||
| 2/WC | Q Halys | 6 | 6 | ||||||||||||||||||||||||
Zsombor Piros won the title, defeating Yshai Oliel in the final, 4–6, 6–4, 6–3.
Alex de Minaur and Blake Ellis were the defending champions, but both players chose not to participate.
Zsombor Piros is a Hungarian professional tennis player. Piros has a career-high ATP singles ranking of world No. 106, achieved on 4 March 2024. He also has a career-high ATP doubles ranking of world No. 991, achieved on 8 August 2022. He is currently the No. 3 Hungarian player.
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Kenneth Raisma and Stefanos Tsitsipas were the defending champions but both players were no longer eligible to participate in junior events.
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Jason Jung was the defending champion but lost in the second round to Maximilian Marterer.
This was the first edition of the tournament.
Kaichi Uchida was the defending champion but lost in the quarterfinals to Juan Manuel Cerúndolo.
Zsombor Piros was the defending champion but chose not to defend his title.
Lukáš Klein was the defending champion but lost in the second round to Ivan Gakhov.
Vít Kopřiva was the defending champion but lost in the first round to Máté Valkusz.
Zsombor Piros was the defending champion but lost in the second round to Henri Squire.
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Lorenzo Musetti was the defending champion but chose not to defend his title.
Zsombor Piros was the defending champion but lost in the final to Jozef Kovalík.
Francisco Cerúndolo won the singles title at the 2024 Croatia Open Umag, defeating Lorenzo Musetti in the final, 2–6, 6–4, 7–6(7–5). It was his third ATP Tour title.