| Competition: | Nemzeti Bajnokság III |
| Season: | 2017–18 |
| Winners: | Kaposvár (West) Tiszakécske (Centre) Monor (East) |
| Promoted: | Kaposvár Tiszakécske Monor |
| Relegated: | Balassagyarmat (East) Csorna (West) Gyirmót II (West) Mórahalom (Centre) Tiszafüred (East) Vecsés (Centre) Veszprém (West) |
| Prevseason: | 2016–17 |
| Nextseason: | 2018–19 |
| Updated: | 28 June 2017 |
The 2017–18 Nemzeti Bajnokság III is Hungary's third-level football competition.
On 20 June 2017, the play-offs finished and the full tables were formed.[1] On 26 June 2017, it was announced that the Hungarian Football Federation did not accept the of Szigetszentmiklósi TK.[2] On 12 July 2017, the Hungarian Football Federation issued the three groups of the 2017–18 season.[3]
On 28 March 2018, the STC Salgótarján announced its withdrawal from the 2017–18 Nemzeti Bajnokság III season.[4]
The results for STC Salgótarján were deleted for the entire season due to their withdrawal.[5]
| Zone | Promoted from 2016–17 MB I | Relegated from 2016–17 NB II | |
|---|---|---|---|
| West | Kozármisleny | ||
| Centre | Iváncsa, Tiszakécske, Makó, Vecsés | Szegedi EOL | |
| East | Balassagyarmat, Debrecen, Füzesgyarmat, Gyöngyös, Tiszafüred | Cigánd | |
| Zone | Promoted to 2017–18 NB II | Relegated to 2017–18 MB I | |
| West | Győr | ||
| Centre | Budafok | Békéscsaba II, Gyula, Dabas-Gyón, Méhkerék, Komló | |
| East | Kazincbarcika | Debrecen II, Rákospalota, Hatvan, Hajdúböszörmény, Újpest II |
| Rank | Player | Club | Goals | |
|---|---|---|---|---|
| 1 |  Zsolt Szabó | Pápa | 20 | |
| 2 | Ádám Hamar | III. Ker. | 15 | |
| 3 | Vilmos Melczer | Érd | 13 |
Updated to games played on 3 June 2018[6]
Promoted: Taksony, Méhkeréki SE and Sényő qualified on slots.The following champions did not assume the Nemzeti Bajnokság III, although they won their county championships: Tolna, Algyő and Pécsvárad