1997–98 Országos Bajnokság I (men's water polo)

The 1997–98 Országos Bajnokság I (OB I) season was the top tier of men's water polo competition in Hungary. It was the 92nd season of the Hungarian Water Polo Championship. The competition involved multiple teams from across Hungary vying for the national championship title. Key aspects of the season would have included the participating teams, the regular season schedule, playoff format (if applicable), and ultimately, the team that won the championship. Further details, such as team standings, individual player statistics, and significant game results, would be found in detailed historical records of Hungarian water polo.