The 2017–18 Nemzeti Bajnokság I (also known as 2017–18 OTP Bank Liga), also known as NB I, was the 119th season of top-tier football in Hungary.
The league was officially named OTP Bank Liga for sponsorship reasons.
Honvéd were the defending champions, having won their fourteenth Hungarian league title.
[2] MTK and Gyirmót finished the 2016–17 Nemzeti Bajnokság I in the last two places and thus were relegated to NB II division.
Following is the list of clubs competed in the league this season, with their manager, captain, kit manufacturer and shirt sponsor.