The 1998 Brisbane Broncos season was the eleventh in the history of Brisbane's National Rugby League premiership team, the Brisbane Broncos. Coached by Wayne Bennett and captained by Allan Langer, they participated in the newly formed National Rugby League's 1998 premiership and posted their three biggest ever wins in rounds 5, 7 and 15 before finishing the regular season as minor premiers. The Broncos then won the 1998 NRL Grand Final, capturing their fourth premiership in seven seasons.