The 2017–18 Liga Națională was the 60th season of Romanian Handball League, the top-level men's professional handball league.
[1] Dinamo București were the defending champions, for the second season in a row.
The first place from each play-off group promoted to Liga Națională.
Because the winner of Divizia A, Seria B, CSM Oradea declined the participation in the 2018–19 Liga Națională, another play-off match was organised to establish the third place and implicitly the last team promoted.
The match was played between the 2nd places from the two Relegation play-offs series.