| Competition: | Megyei Bajnokság I |
| Season: | 2017–18 |
| Promoted: | 9 teams |
| Relegated: | 38 teams |
| Prevseason: | 2016–17 |
| Nextseason: | 2018–19 |
The 2017–18 Megyei Bajnokság I includes the championships of Counties in Hungary (including Budapest). It is the fourth tier of the Hungarian football league system.[1]
Pécsvárad rejected NB III participation.
Champion Méhkerék were one of the three teams who were drawn first, giving them automatic promotion.[2] However before the following season, the club was disbanded and the newly formed team continued in the sixth division.[3]
Algyő rejected NB III participation.
Tolna did not take NB III participation.
The draw was held on 5 June 2018. The first legs were played on 9 June, and the second legs were played on 16 June.[4] Taksony, Sényő and Méhkerék gained direct promotion however the latter got dissolved than reestablished in the Megyei Bajnokság III after this season.
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All times Central European Summer Time (UTC+2)Sárvár won 1–0 on aggregate and are promoted to the Nemzeti Bajnokság III.----Eger won 6–1 on aggregate and are promoted to the Nemzeti Bajnokság III.----4–4 on aggregate. Sajóbábony won on away goals and are promoted to the Nemzeti Bajnokság III.----Komárom won 4–1 on aggregate and are promoted to the Nemzeti Bajnokság III.----Nagykanizsa won 7–0 on aggregate and are promoted to the Nemzeti Bajnokság III.----Kecskemét won 5–3 on aggregate and are promoted to the Nemzeti Bajnokság III.----Ménfőcsanak won 4–3 on aggregate and are promoted to the Nemzeti Bajnokság III.
| Form of promotion | No | Teams | |
|---|---|---|---|
| Play-off winners | 7 | Eger, Kecskemét, Komárom, Ménfőcsanak, Nagykanizsa, Sajóbábony, Sárvár | |
| Direct promotion | 2 | Taksony, Sényő | |
| Replenished after withdrawals | 1 | Salgótarján |